There are a lot of heat pump installers in the UK. Most will tell you they do great work. Very few can prove it with independent, publicly verified data.
We can.
One of Hohm’s installations in Somerford, Cheshire currently sits 5th out of 524 air source heat pump systems on the Heat Pump Monitor all-time leaderboard, and 3rd out of 432 over the last 90 days. Heat Pump Monitor is a public, open-source platform that tracks real-world heat pump performance using meter-grade verified data from installations across the UK. It’s where the industry’s best installers go to let their results do the talking.

What the numbers actually mean
Heat Pump Monitor ranks systems by COP, Coefficient of Performance. It measures how much heat a system delivers for every unit of electricity it consumes.
Our Somerford installation achieved a COP of 5.3. That means for every £1 spent on electricity, the system returned £5.30 worth of heat. The UK real-world average sits between 2.5 and 3.0.
That’s not a small margin. It’s the difference between a heat pump that genuinely cuts your bills and one that leaves you wondering why you bothered.
Why do some installations perform, and others don’t
A heat pump is only as good as the engineer who designs and installs it. The same unit can perform brilliantly in one home and underwhelm in another, and the difference almost always comes down to:
- Accurate heat loss calculation — sizing the system correctly for your home from day one
- Low flow temperatures — heat pumps are most efficient when running at lower temperatures, which requires the right emitters and a well-designed system
- Careful commissioning — how the system is set up and fine-tuned after installation makes a significant difference to long-term performance
These aren’t shortcuts you can take and hope for the best. They’re the fundamentals, and they’re what separates a top-ranked installation from an average one.
Considering a heat pump in Cheshire?
If you’re still weighing up whether a heat pump is right for your home, verified performance data is one of the most useful things you can look at. It cuts through the marketing and shows you what installers actually deliver in real homes.
Hohm is a RECC member, meaning you’re protected by a strict consumer code covering everything from your initial quote through to aftercare. You can check his track record yourself at heatpumpmonitor.org, no sales pitch needed.
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