Radiators & Heat Pumps
Do I Need New Radiators with a Heat Pump?
One of the most common questions we hear is: “Will I need to replace all my radiators?” The answer is: not always. Many homes can keep some or all of their existing radiators, but in some cases upgrades are recommended to make sure every room stays warm and your heat pump runs efficiently.
Why Radiator Size Matters
Heat pumps operate at lower flow temperatures than traditional boilers — typically 35–55 °C, depending on your home and the system design. At these lower temperatures, radiators need enough surface area to deliver the required heat.
- Well-sized radiators keep your rooms warm and comfortable.
- If any radiators are on the smaller side, it’s simply an opportunity to upgrade to modern, higher-output models. This improves comfort, helps your system run more efficiently, and in many cases gives rooms a fresh new look.
What Happens During Our Survey?
As part of your free on-site survey, we will:
- Carry out room-by-room heat loss calculations
- Check the size and condition of your existing radiators
- Identify whether any need upgrading to suit a heat pump’s lower flow temperature
- Recommend the right mix of emitters (radiators and/or underfloor heating) so your home stays comfortable and efficient
Radiator Upgrades - Tailored, not total.
Upgrading doesn’t mean replacing every radiator. In most homes, only a few need to be swapped out — usually in larger or harder-to-heat rooms. Options include:
- Slimline radiators for a discreet look with higher output
- Traditional column radiators that suit period homes while delivering more heat
- Underfloor heating in selected spaces, where appropriate
This way, you only replace what’s necessary while ensuring the whole system works as it should.
TRVs and Controls
Heat pumps work best when running steadily at low temperatures, so system flow is critical. Thermostatic radiator valves (TRVs) can be useful in some situations, but they’re not always recommended, especially in bedrooms, as shutting radiators off can reduce efficiency.
Instead, we design your system so it naturally delivers the right heat to every room, with smart controls to keep your home comfortable and efficient. We’ll always advise on the best control setup for your property.
Getting the Best Efficiency
To make the most of your radiators and heat pump system:
- Keep radiators clear of large furniture and heavy coverings
- Ensure radiators are bled and balanced during commissioning
- Use stable, consistent temperature settings rather than frequent on/off cycles
- Make small insulation improvements where possible (e.g. loft insulation, double glazing) to reduce heat demand
Why Choose Eaasy Heat?
- Detailed room-by-room heat loss and radiator assessments
- Clear recommendations on which radiators (if any) need upgrading — no guesswork
- Systems designed, installed, and commissioned to MCS standards
- Comfort in every room, with efficiency built in