[
Homeowner Service
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£295 total · includes VAT
£295 total · includes VAT
Get Your Heat Pump Installation Designed Right Before You Commit
An independent review of your heat pump installation design and Heat Loss Survey findings, before you sign off on an installer’s quote.
An independent review of your heat pump installation design and Heat Loss Survey findings, before you sign off on an installer’s quote.
An independent review of your heat pump installation design and Heat Loss Survey findings, before you sign off on an installer’s quote.
An independent review of your heat pump installation design and Heat Loss Survey findings, before you sign off on an installer’s quote.
The biggest mistakes with a heat pump installation happen before the unit ever goes in the ground. A poorly designed air source heat pump installation can leave you with higher electricity bills, poor comfort and years of frustration, no matter how good the equipment itself is. We independently review your installation design before you commit, so you know you're making the right decision.
The biggest mistakes with a heat pump installation happen before the unit ever goes in the ground. A poorly designed air source heat pump installation can leave you with higher electricity bills, poor comfort and years of frustration, no matter how good the equipment itself is. We independently review your installation design before you commit, so you know you're making the right decision.
The biggest mistakes with a heat pump installation happen before the unit ever goes in the ground. A poorly designed air source heat pump installation can leave you with higher electricity bills, poor comfort and years of frustration, no matter how good the equipment itself is. We independently review your installation design before you commit, so you know you're making the right decision.
The biggest mistakes with a heat pump installation happen before the unit ever goes in the ground. A poorly designed air source heat pump installation can leave you with higher electricity bills, poor comfort and years of frustration, no matter how good the equipment itself is. We independently review your installation design before you commit, so you know you're making the right decision.
✔ Satisfaction Guarantee
✔ Satisfaction Guarantee
✔ Satisfaction Guarantee
✔ Satisfaction Guarantee
✔ Satisfaction Guarantee
✔ No hidden fees
✔ No hidden fees
✔ Independent Technical Advice
✔ One-to-one video call
✔ One-to-one video call
✔ No engineer visit needed
✔ No engineer visit needed
[
Who This Is For
]
Is This the Right Service for You?
A £295 independent review could save you thousands by identifying design issues before your heat pump installation begins.
A heat pump installation is a significant investment, typically costing £8,000–£15,000 or more. While the Boiler Upgrade Scheme can reduce the upfront cost, it doesn't confirm that your air source heat pump installation has actually been designed correctly for your home.
A poorly designed installation doesn't usually fail on day one. Problems often appear months or years later through higher electricity bills, poor comfort, short-cycling, excessive compressor wear or a system that never performs as promised.
A £295 independent review could save you thousands by identifying design issues before your heat pump installation begins.
A heat pump installation is a significant investment, typically costing £8,000–£15,000 or more. While the Boiler Upgrade Scheme can reduce the upfront cost, it doesn't confirm that your air source heat pump installation has actually been designed correctly for your home.
A poorly designed installation doesn't usually fail on day one. Problems often appear months or years later through higher electricity bills, poor comfort, short-cycling, excessive compressor wear or a system that never performs as promised.
A £295 independent review could save you thousands by identifying design issues before your heat pump installation begins.
A heat pump installation is a significant investment, typically costing £8,000–£15,000 or more. While the Boiler Upgrade Scheme can reduce the upfront cost, it doesn't confirm that your air source heat pump installation has actually been designed correctly for your home.
A poorly designed installation doesn't usually fail on day one. Problems often appear months or years later through higher electricity bills, poor comfort, short-cycling, excessive compressor wear or a system that never performs as promised.
This review is ideal if:
✓ You’re considering a heat pump installation but want expert advice before speaking to installers, so you understand what a good design should look like.
✓ You’ve received a heat pump installation quote and want an independent second opinion before committing.
✓ You’ve received two or more quotes and want to know which design is technically correct, not just the cheapest.
Unlike an installer, we don’t sell equipment or carry out installations. Our job is simply to review the proposed design independently and tell you whether it stacks up, giving you clear, unbiased advice before you commit.
This service is for decisions before installation. Once a heat pump is running, symptoms such as poor heating, high running costs or short-cycling need evidence from the operating system itself. Our Fix My Heat Pump diagnostic service is designed for that stage, identifying the root cause before changes are recommended.
This review is ideal if:
✓ You’re considering a heat pump installation but want expert advice before speaking to installers, so you understand what a good design should look like.
✓ You’ve received a heat pump installation quote and want an independent second opinion before committing.
✓ You’ve received two or more quotes and want to know which design is technically correct, not just the cheapest.
Unlike an installer, we don’t sell equipment or carry out installations. Our job is simply to review the proposed design independently and tell you whether it stacks up, giving you clear, unbiased advice before you commit.
This service is for decisions before installation. Once a heat pump is running, symptoms such as poor heating, high running costs or short-cycling need evidence from the operating system itself. Our Fix My Heat Pump diagnostic service is designed for that stage, identifying the root cause before changes are recommended.
This review is ideal if:
✓ You’re considering a heat pump installation but want expert advice before speaking to installers, so you understand what a good design should look like.
✓ You’ve received a heat pump installation quote and want an independent second opinion before committing.
✓ You’ve received two or more quotes and want to know which design is technically correct, not just the cheapest.
Unlike an installer, we don’t sell equipment or carry out installations. Our job is simply to review the proposed design independently and tell you whether it stacks up, giving you clear, unbiased advice before you commit.
This service is for decisions before installation. Once a heat pump is running, symptoms such as poor heating, high running costs or short-cycling need evidence from the operating system itself. Our Fix My Heat Pump diagnostic service is designed for that stage, identifying the root cause before changes are recommended.
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What Goes Wrong
]
Common Design Problems We Find Before Installation
Getting the sizing right is the single biggest factor in how well your heat pump installation will perform, and it's also the thing installers most often get wrong. Here's what we check:
Getting the sizing right is the single biggest factor in how well your heat pump installation will perform, and it's also the thing installers most often get wrong. Here's what we check:
Getting the sizing right is the single biggest factor in how well your heat pump installation will perform, and it's also the thing installers most often get wrong. Here's what we check:
Oversized heat pump
This is the single most common issue we see. It usually happens because the heat pump has been selected using a rule of thumb or an estimated heat loss rather than a proper room-by-room calculation. An oversized heat pump runs in short bursts instead of long, efficient cycles, leading to higher running costs, increased compressor wear, more noise and a less comfortable home.
Undersized heat pump
Less common than oversizing, but often more serious. An undersized heat pump may appear to work perfectly during mild weather but struggle to keep your home warm on the coldest days of the year. This often leads to the immersion heater or backup heater running more frequently, significantly increasing your electricity bills while still leaving the property feeling cold.
Radiators too small for the design
A correctly sized heat pump is only part of the equation. Your radiators or underfloor heating also need to deliver enough heat at the lower flow temperatures a heat pump is designed to run at. Radiators originally sized for a gas boiler often need upgrading, yet this is one of the most commonly overlooked parts of a quotation.
Flow temperature too high
The proposed flow temperature has a huge impact on efficiency. Every degree higher than necessary increases running costs. We regularly see systems designed to operate at unnecessarily high temperatures simply because the heat emitters haven't been checked properly. A well-designed system should always aim for the lowest practical flow temperature.
Pipework too small
A heat pump can be correctly sized on paper but still perform poorly if the existing pipework cannot carry the required water flow. Undersized pipework reduces efficiency, limits heat output and can create ongoing performance problems. It's an easy check to miss because it requires looking beyond the headline heat pump size.
Poor zoning strategy
Heating zones should improve comfort, not create problems. Too many zones, incorrectly positioned controls or zoning that hasn't been considered alongside the heat pump design can reduce efficiency, cause rooms to overheat or never quite reach temperature, and even encourage unnecessary short cycling.
Unnecessary buffer vessels and low loss headers
These components are sometimes essential, but they're also frequently added as a default without being genuinely required. An unnecessary buffer vessel or low loss header can increase installation costs, reduce efficiency and, in some cases, introduce the very short-cycling issues they were intended to prevent.
Incorrect hot water cylinder sizing
Hot water should be considered as part of the overall system design, not as an afterthought. A cylinder that's too small may run out of hot water during busy periods, while one that's unnecessarily large wastes energy reheating water you don't need. We check whether the cylinder specification is appropriate for both your household and the heat pump.
Weather compensation not configured properly
Even a perfectly sized heat pump won't perform efficiently if the controls aren't configured correctly. Weather compensation allows the heat pump to automatically adjust its flow temperature as outdoor conditions change, reducing electricity consumption while maintaining comfort. It's one of the biggest efficiency improvements available, yet it's often overlooked during system design.
If you're also considering adding cooling to your system, our Heat Pump Cooling assessment can check whether your proposed design will support that too.
Every one of these decisions is made before your heat pump installation begins. That's why they're usually far easier and far cheaper to correct while they're still on paper than after the system has been installed. A £295 independent review could save you from years of higher running costs, poor performance or expensive remedial work later.
Oversized heat pump
This is the single most common issue we see. It usually happens because the heat pump has been selected using a rule of thumb or an estimated heat loss rather than a proper room-by-room calculation. An oversized heat pump runs in short bursts instead of long, efficient cycles, leading to higher running costs, increased compressor wear, more noise and a less comfortable home.
Undersized heat pump
Less common than oversizing, but often more serious. An undersized heat pump may appear to work perfectly during mild weather but struggle to keep your home warm on the coldest days of the year. This often leads to the immersion heater or backup heater running more frequently, significantly increasing your electricity bills while still leaving the property feeling cold.
Radiators too small for the design
A correctly sized heat pump is only part of the equation. Your radiators or underfloor heating also need to deliver enough heat at the lower flow temperatures a heat pump is designed to run at. Radiators originally sized for a gas boiler often need upgrading, yet this is one of the most commonly overlooked parts of a quotation.
Flow temperature too high
The proposed flow temperature has a huge impact on efficiency. Every degree higher than necessary increases running costs. We regularly see systems designed to operate at unnecessarily high temperatures simply because the heat emitters haven't been checked properly. A well-designed system should always aim for the lowest practical flow temperature.
Pipework too small
A heat pump can be correctly sized on paper but still perform poorly if the existing pipework cannot carry the required water flow. Undersized pipework reduces efficiency, limits heat output and can create ongoing performance problems. It's an easy check to miss because it requires looking beyond the headline heat pump size.
Poor zoning strategy
Heating zones should improve comfort, not create problems. Too many zones, incorrectly positioned controls or zoning that hasn't been considered alongside the heat pump design can reduce efficiency, cause rooms to overheat or never quite reach temperature, and even encourage unnecessary short cycling.
Unnecessary buffer vessels and low loss headers
These components are sometimes essential, but they're also frequently added as a default without being genuinely required. An unnecessary buffer vessel or low loss header can increase installation costs, reduce efficiency and, in some cases, introduce the very short-cycling issues they were intended to prevent.
Incorrect hot water cylinder sizing
Hot water should be considered as part of the overall system design, not as an afterthought. A cylinder that's too small may run out of hot water during busy periods, while one that's unnecessarily large wastes energy reheating water you don't need. We check whether the cylinder specification is appropriate for both your household and the heat pump.
Weather compensation not configured properly
Even a perfectly sized heat pump won't perform efficiently if the controls aren't configured correctly. Weather compensation allows the heat pump to automatically adjust its flow temperature as outdoor conditions change, reducing electricity consumption while maintaining comfort. It's one of the biggest efficiency improvements available, yet it's often overlooked during system design.
If you're also considering adding cooling to your system, our Heat Pump Cooling assessment can check whether your proposed design will support that too.
Every one of these decisions is made before your heat pump installation begins. That's why they're usually far easier and far cheaper to correct while they're still on paper than after the system has been installed. A £295 independent review could save you from years of higher running costs, poor performance or expensive remedial work later.
Oversized heat pump
This is the single most common issue we see. It usually happens because the heat pump has been selected using a rule of thumb or an estimated heat loss rather than a proper room-by-room calculation. An oversized heat pump runs in short bursts instead of long, efficient cycles, leading to higher running costs, increased compressor wear, more noise and a less comfortable home.
Undersized heat pump
Less common than oversizing, but often more serious. An undersized heat pump may appear to work perfectly during mild weather but struggle to keep your home warm on the coldest days of the year. This often leads to the immersion heater or backup heater running more frequently, significantly increasing your electricity bills while still leaving the property feeling cold.
Radiators too small for the design
A correctly sized heat pump is only part of the equation. Your radiators or underfloor heating also need to deliver enough heat at the lower flow temperatures a heat pump is designed to run at. Radiators originally sized for a gas boiler often need upgrading, yet this is one of the most commonly overlooked parts of a quotation.
Flow temperature too high
The proposed flow temperature has a huge impact on efficiency. Every degree higher than necessary increases running costs. We regularly see systems designed to operate at unnecessarily high temperatures simply because the heat emitters haven't been checked properly. A well-designed system should always aim for the lowest practical flow temperature.
Pipework too small
A heat pump can be correctly sized on paper but still perform poorly if the existing pipework cannot carry the required water flow. Undersized pipework reduces efficiency, limits heat output and can create ongoing performance problems. It's an easy check to miss because it requires looking beyond the headline heat pump size.
Poor zoning strategy
Heating zones should improve comfort, not create problems. Too many zones, incorrectly positioned controls or zoning that hasn't been considered alongside the heat pump design can reduce efficiency, cause rooms to overheat or never quite reach temperature, and even encourage unnecessary short cycling.
Unnecessary buffer vessels and low loss headers
These components are sometimes essential, but they're also frequently added as a default without being genuinely required. An unnecessary buffer vessel or low loss header can increase installation costs, reduce efficiency and, in some cases, introduce the very short-cycling issues they were intended to prevent.
Incorrect hot water cylinder sizing
Hot water should be considered as part of the overall system design, not as an afterthought. A cylinder that's too small may run out of hot water during busy periods, while one that's unnecessarily large wastes energy reheating water you don't need. We check whether the cylinder specification is appropriate for both your household and the heat pump.
Weather compensation not configured properly
Even a perfectly sized heat pump won't perform efficiently if the controls aren't configured correctly. Weather compensation allows the heat pump to automatically adjust its flow temperature as outdoor conditions change, reducing electricity consumption while maintaining comfort. It's one of the biggest efficiency improvements available, yet it's often overlooked during system design.
If you're also considering adding cooling to your system, our Heat Pump Cooling assessment can check whether your proposed design will support that too.
Every one of these decisions is made before your heat pump installation begins. That's why they're usually far easier and far cheaper to correct while they're still on paper than after the system has been installed. A £295 independent review could save you from years of higher running costs, poor performance or expensive remedial work later.
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What's Included
]
Everything Covered in Your £295 Review
Your review covers far more than simply checking the heat pump size. We carry out an independent assessment of the complete system design before installation begins, highlighting any technical concerns and explaining what they mean in plain English.
Your review includes:
✔ Heat loss calculation review
✔ Heat pump sizing validation
✔ Flow temperature assessment
✔ Radiator and emitter suitability
✔ Hot water cylinder review
✔ Pipework and hydraulic design review (where information is available)
✔ Weather compensation and controls assessment
✔ Identification of any design risks or specification concerns
✔ Clear recommendations before installation begins
✔ A one-to-one video call to discuss the findings and answer your questions
Your review covers far more than simply checking the heat pump size. We carry out an independent assessment of the complete system design before installation begins, highlighting any technical concerns and explaining what they mean in plain English.
Your review includes:
✔ Heat loss calculation review
✔ Heat pump sizing validation
✔ Flow temperature assessment
✔ Radiator and emitter suitability
✔ Hot water cylinder review
✔ Pipework and hydraulic design review (where information is available)
✔ Weather compensation and controls assessment
✔ Identification of any design risks or specification concerns
✔ Clear recommendations before installation begins
✔ A one-to-one video call to discuss the findings and answer your questions
Your review covers far more than simply checking the heat pump size. We carry out an independent assessment of the complete system design before installation begins, highlighting any technical concerns and explaining what they mean in plain English.
Your review includes:
✔ Heat loss calculation review
✔ Heat pump sizing validation
✔ Flow temperature assessment
✔ Radiator and emitter suitability
✔ Hot water cylinder review
✔ Pipework and hydraulic design review (where information is available)
✔ Weather compensation and controls assessment
✔ Identification of any design risks or specification concerns
✔ Clear recommendations before installation begins
✔ A one-to-one video call to discuss the findings and answer your questions
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What You Provide
]
What Happens Next
1. We'll get in touch
Once you've booked, we'll contact you to understand where you are with your project. Whether you haven't spoken to an installer yet or already have a quotation, we'll ask for any relevant information and guide you through the next steps.
2. We review the design
We independently assess the proposed heat pump design, identify any technical concerns and prepare clear recommendations.
3. We talk you through everything
We'll explain our findings on a one-to-one video call, answer your questions and help you decide how to move forward with confidence.
1. We'll get in touch
Once you've booked, we'll contact you to understand where you are with your project. Whether you haven't spoken to an installer yet or already have a quotation, we'll ask for any relevant information and guide you through the next steps.
2. We review the design
We independently assess the proposed heat pump design, identify any technical concerns and prepare clear recommendations.
3. We talk you through everything
We'll explain our findings on a one-to-one video call, answer your questions and help you decide how to move forward with confidence.
1. We'll get in touch
Once you've booked, we'll contact you to understand where you are with your project. Whether you haven't spoken to an installer yet or already have a quotation, we'll ask for any relevant information and guide you through the next steps.
2. We review the design
We independently assess the proposed heat pump design, identify any technical concerns and prepare clear recommendations.
3. We talk you through everything
We'll explain our findings on a one-to-one video call, answer your questions and help you decide how to move forward with confidence.
[
Your Options
]
After the Review
You'll receive clear, independent recommendations before committing to your installation.
If your proposed design is technically sound, you can move forward with confidence, knowing it has been independently reviewed.
If we identify concerns, we'll explain exactly what needs to change and provide practical recommendations you can discuss with your installer. Where appropriate, you may decide to request a revised quotation or seek a second opinion before investing thousands in a system that isn't right for your home.
Whatever the outcome, you'll be able to make an informed decision based on technical evidence rather than guesswork.
Already had your heat pump installed and running into issues? Take a look at the most common heat pump problems we diagnose to see if this sounds familiar.
You'll receive clear, independent recommendations before committing to your installation.
If your proposed design is technically sound, you can move forward with confidence, knowing it has been independently reviewed.
If we identify concerns, we'll explain exactly what needs to change and provide practical recommendations you can discuss with your installer. Where appropriate, you may decide to request a revised quotation or seek a second opinion before investing thousands in a system that isn't right for your home.
Whatever the outcome, you'll be able to make an informed decision based on technical evidence rather than guesswork.
Already had your heat pump installed and running into issues? Take a look at the most common heat pump problems we diagnose to see if this sounds familiar.
You'll receive clear, independent recommendations before committing to your installation.
If your proposed design is technically sound, you can move forward with confidence, knowing it has been independently reviewed.
If we identify concerns, we'll explain exactly what needs to change and provide practical recommendations you can discuss with your installer. Where appropriate, you may decide to request a revised quotation or seek a second opinion before investing thousands in a system that isn't right for your home.
Whatever the outcome, you'll be able to make an informed decision based on technical evidence rather than guesswork.
Already had your heat pump installed and running into issues? Take a look at the most common heat pump problems we diagnose to see if this sounds familiar.
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Our Promise
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Satisfaction Guarantee
If after receiving your report you feel it hasn't provided useful technical insight or clarity, contact us within 7 days. We'll review your concerns, and if we agree the service hasn't delivered the expected value, we'll provide a full refund.
If after receiving your report you feel it hasn't provided useful technical insight or clarity, contact us within 7 days. We'll review your concerns, and if we agree the service hasn't delivered the expected value, we'll provide a full refund.
If after receiving your report you feel it hasn't provided useful technical insight or clarity, contact us within 7 days. We'll review your concerns, and if we agree the service hasn't delivered the expected value, we'll provide a full refund.
If after receiving your report you feel it hasn't provided useful technical insight or clarity, contact us within 7 days. We'll review your concerns, and if we agree the service hasn't delivered the expected value, we'll provide a full refund.
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Faq
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Common Questions About Our Reviews
How do I know if my heat pump sizing is correct?
The only reliable way is checking the heat loss calculation behind your quote against the specific heat pump model proposed, across its full output range, not just its peak rating. That's exactly what this review does.
I've got two or three heat pump quotes with different sizing. Which one is right?
Do I still need this if I already have a signed quote?
What if my installer disagrees with your findings?
How long does the review take, and is a site visit needed?
Is this only for people who haven't had their heat pump installed yet?
Contact Us
Not Sure Which Service You Need?
Not Sure Which Service You Need?
Not Sure Which Service You Need?
Not Sure Which Service You Need?
Not Sure Which Service You Need?
Whether you need help with an existing heat pump, a pre-installation review, cooling advice, servicing or a room-by-room heat loss survey, send us a few details and we'll point you in the right direction.
Whether you need help with an existing heat pump, a pre-installation review, cooling advice, servicing or a room-by-room heat loss survey, send us a few details and we'll point you in the right direction.
Whether you need help with an existing heat pump, a pre-installation review, cooling advice, servicing or a room-by-room heat loss survey, send us a few details and we'll point you in the right direction.
