Choosing the right heat pump: what to look for

Start with the property, not the product

Before you even think about brands or features, it’s all about the building.

• Property size and layout – Larger properties or those with open-plan spaces will typically require higher heat output (measured in kW) or multiple heat pump systems to meet demand.

• Heat demand – This isn’t guesswork. A proper heat loss calculation is essential to size the system correctly.

• Insulation levels – Older, poorly insulated homes will place a much higher demand on the system than newer builds.

Why it matters:  Oversizing leads to inefficiency and higher running costs. Undersizing? You’ll struggle to maintain comfortable temperatures, especially in winter.

Understand efficiency ratings (COP & SCOP)

You’ll see COP (Coefficient of Performance) and SCOP (Seasonal Coefficient of Performance) on every spec sheet, but they’re only useful if you know what they’re telling you.

• COP – Efficiency at a specific moment under set conditions

• SCOP – Real-world seasonal efficiency across varying temperatures

What to look for:  A higher SCOP generally means better long-term efficiency, but always consider it in context. A high rating on paper doesn’t always translate if the system isn’t suited to the property.

Bottom line:  The best unit on paper won’t deliver if it’s not right for the job. We’ll help you match performance to real-world conditions, not just datasheets.

Don’t overlook noise levels

This one’s easy to underestimate, until the customer mentions it.

• Outdoor units can generate noticeable sound, especially at night

• Placement matters (near windows, boundaries, or neighbouring properties)

What to check:

• Manufacturer’s decibel (dB) ratings

• Low-noise or “quiet mode” features

On-site reality:  A quieter unit can make all the difference in residential installs, particularly in tighter urban spaces.

Installation requirements: plan ahead

Not all heat pumps are installed the same way. And the differences can impact time, cost, and complexity.

Consider:

• Pipe runs and distances

• Electrical requirements

• System compatibility (radiators vs underfloor heating)

• Space for indoor/outdoor units

Tip:  The easier a system is to install and commission, the more time you save, and the fewer headaches down the line.

Air source vs other heat pump types

Air source heat pumps (ASHPs) are leading the charge, but they’re not the only option.

Air Source Heat Pumps (ASHP):

• Easier to install

• Lower upfront cost

• Ideal for most residential projects

Ground Source Heat Pumps (GSHP):

• Higher efficiency

• Requires ground loops (more invasive install)

• Better suited for larger properties or new builds

Water Source Heat Pumps:

• Highly efficient

• Limited to properties with access to suitable water sources

What it means for you:  Most projects will point to air source, but knowing when to specify alternatives sets you apart. Whether it’s a single property or a larger housing scheme, CEF can help you choose the right system for the job.

Work with manufacturers you can trust

You’re not just fitting a product, you’re putting your reputation on it.

At CEF, we supply heat pumps from trusted, proven brands, supported by:

• Strong warranties

• Clear technical documentation

• Reliable access to spare parts

And with nationwide availability, you’re not waiting weeks for key products. You get what you need, when you need it—keeping your projects moving.

After-sales support: Where CEF has your back

This is where the right supplier makes all the difference.

With CEF, you’re supported beyond the sale:

• Technical support when you need it

• Guidance on commissioning and setup

• Access to training and product knowledge

• Fast availability of parts through our branch network

We also support contractors looking to grow in renewables, helping you build confidence in heat pump installs and access wider opportunities across the market.

Because when questions come up, you need answers quickly, not days later.

Built for projects of every size

Whether you’re:

• Adding heat pumps to your existing renewables offering

• Taking on your first low-carbon heating install

• Delivering large-scale retrofit or housing projects

Having a consistent supply partner matters.

We work with contractors, housing providers, and national accounts to ensure reliable product access, technical support, and project continuity at any scale.