By the Comcare Heating Solutions engineering team, commercial heating specialists in Liverpool and the North West.
Short answer (TL;DR)
The best office heating system is the one that keeps every desk at a comfortable, legally compliant temperature (at least 16°C for sedentary office work under the HSE Approved Code of Practice) without burning cash on rooms nobody is using. For most UK offices that comes down to four realistic options: a modern condensing gas boiler feeding radiators or fan coil units, an air source heat pump, a VRF (Variable Refrigerant Flow) system that heats and cools by zone, or electric and infrared heating for smaller spaces. Well insulated, multi zone offices usually get the best long term value from VRF or an air source heat pump paired with smart zoning controls. Older or poorly insulated buildings on a tight budget often still lean on a high efficiency gas boiler. The right call depends on your building fabric, how the space is used, and your energy goals, which is exactly what a commercial heating survey is for.
If you run an office in Liverpool or the North West and want a straight answer for your building, Comcare can survey your site and design a system that fits.
What are your options for heating an office?
Offices are not warehouses. You are heating people sitting still for eight hours, in a building split into meeting rooms, open plan desks, kitchens and reception areas that all warm up and cool down at different rates. That mix of zones is the single biggest factor in choosing a system. Here are the four setups we install and maintain most often for commercial offices.
1. Gas boiler with radiators or fan coil units
Still the most common office setup in the UK. A central condensing gas boiler heats water that runs to radiators or fan coil units around the building. Modern condensing boilers run at around 93 percent efficiency, the upfront cost is the lowest of any option, and every heating engineer in the country knows how to service one. The downside is that gas only heats. It does nothing for the summer overheating that plagues glass fronted offices, and gas prices plus the UK’s move toward low carbon heating mean it is a shrinking long term bet.
2. Air source heat pump
An air source heat pump pulls warmth from outside air and delivers it indoors. Because it moves heat rather than burning fuel, a well tuned unit produces roughly three units of heat for every unit of electricity it uses, an efficiency of around 300 percent compared with a gas boiler’s 93 percent. Heat pumps work best in well insulated offices that hold their heat, and many air to air systems also provide cooling in summer, which is a genuine bonus for a modern workspace. If you want the detail on how they perform, our guide on how commercial heat pumps work in the UK walks through it.
3. VRF (Variable Refrigerant Flow) system
VRF is the setup purpose built for offices. One outdoor unit connects to multiple indoor units, and each one runs on its own thermostat, so the sunny south facing meeting room and the cold north facing office can be controlled independently. Heat recovery VRF can even take waste heat from a room that needs cooling and push it into a room that needs warming at the same time. It is highly efficient, integrates cleanly with a building management system, and handles both heating and cooling. The trade off is a higher installation cost, which usually pays back through lower running costs and precise zoning.
4. Electric and infrared heating
For smaller offices, single rooms, or spaces used only occasionally, electric panel heaters or infrared panels are cheap to fit and need almost no maintenance. Infrared warms people and surfaces directly rather than heating the whole air volume, which can suit high ceilinged or draughty spaces. Running costs per unit of heat are higher than gas or a heat pump, so electric is best as a targeted or backup solution rather than the primary system for a large office.
Office heating systems compared
Here is how the four options stack up for a typical UK commercial office. Figures are indicative and will vary with your building fabric, size and tariff.
| System | Upfront cost | Running cost | Efficiency | Heating & cooling? | Best for |
|---|---|---|---|---|---|
| Gas boiler + radiators/fan coils | Low | Medium | ~93% | Heating only | Older or budget conscious offices with existing gas infrastructure |
| Air source heat pump | High | Low to medium | ~300% (COP ~3) | Often both (air to air) | Well insulated offices aiming for lower carbon and long term savings |
| VRF system | High | Low | Very high, zone controlled | Both, simultaneously | Multi zone offices needing precise control and cooling |
| Electric / infrared | Very low | High | 100% at point of use | Heating only | Small offices, single rooms or occasional use spaces |
What is the best heating system for an office?
There is no single winner, and any installer who gives you one before seeing your building is guessing. That said, here is the honest rule of thumb our engineers use:
If your office is well insulated and split into several zones, a VRF system or an air source heat pump with smart zoning usually delivers the best comfort and the lowest running costs over the system’s life, with the added benefit of summer cooling. If your building is older, poorly insulated, or you need the lowest possible upfront spend, a high efficiency condensing gas boiler feeding well balanced radiators or fan coils is still a sound, reliable choice, and you can upgrade the controls to claw back a lot of the efficiency gap. For a broader view across every commercial property type, see our pillar guide on the best heating system for a commercial building.
How warm does an office legally need to be in the UK?
Under the Workplace (Health, Safety and Welfare) Regulations 1992, employers must provide a “reasonable” indoor temperature. The Health and Safety Executive’s Approved Code of Practice sets the benchmark: at least 16°C where work is mainly sedentary, such as an office, or 13°C where the work involves rigorous physical effort. There is no hard legal maximum, though the HSE is reviewing the ACOP in 2026 to bring it in line with modern workplaces, so the guidance may tighten.
The practical takeaway is simple: your heating system needs to hold at least 16°C reliably across the whole floor plate, including the cold corners, on the coldest morning of the year. If parts of your office never quite get there, that is usually a sizing, balancing or zoning problem rather than a reason to rip the whole system out.
Are heat pumps a good choice for offices?
For the right building, yes. Heat pumps shine in well insulated offices that retain heat, because they deliver comfortable warmth at lower flow temperatures than a gas boiler. Air to air heat pumps double as air conditioning in summer, which matters for glass fronted offices that overheat. The two things to check before committing are insulation quality and available electrical capacity, since a large heat pump draws more power than a boiler. If your building loses heat quickly, the smart move is to improve the fabric first or consider a hybrid setup, and a proper survey will tell you which.
How much does it cost to heat an office?
Running cost depends far more on your building than on the badge on the equipment. The three levers that move the bill are insulation, how the space is zoned, and how well the controls are set up. A leaky, single zone office with the heating blasting from 6am to 8pm will cost a fortune whatever system it has. A well insulated office running a zoned VRF or heat pump, heating only occupied areas to schedule, can cut that dramatically.
On the equipment itself, a gas boiler is the cheapest to buy and a heat pump or VRF costs more upfront but generally runs cheaper and lasts longer. The bigger savings, though, come from the controls, which is where most offices are leaving money on the table.
How do you stop wasting money on office heating?
This is where offices make the fastest gains, often without replacing a single boiler. The biggest culprits are heating empty rooms, running the whole building to suit one cold corner, and controls that were set up on day one and never touched since. Three fixes make the most difference:
- Zoning. Split the building so meeting rooms, open plan and reception each heat independently and only when in use.
- Smart controls and a BMS. A building management system schedules heating around real occupancy, weather compensates, and flags faults early. Our guide to commercial heating controls and BMS covers how much this can save.
- Regular servicing. A system that is balanced, clean and correctly commissioned uses less energy and lasts longer. Planned commercial heating service and maintenance pays for itself in avoided breakdowns and efficiency alone.
For the full picture on trimming consumption, our post on energy efficient commercial heating systems goes deeper.
Signs your office heating system needs upgrading
You do not always need a full replacement, but it is worth getting a survey if you notice any of these: rooms that never reach a comfortable temperature, wild swings between too hot and too cold, rising energy bills with no change in usage, frequent breakdowns, or a boiler more than 12 to 15 years old. Any of these usually means the system is oversized, undersized, badly zoned or simply worn out, and fixing it early is far cheaper than an emergency in January.
Why choose Comcare for office heating in Liverpool and the North West
Comcare Heating Solutions designs, installs and maintains commercial heating for offices across Liverpool, Merseyside and the wider North West. We do not sell you a system off a brochure. We survey your building, look at how the space is actually used, and design around your insulation, your zones and your budget, whether that ends up being a VRF system, an air source heat pump, a modern gas boiler or a smart controls upgrade to an existing setup. We also handle the cooling side, so a glass fronted office that bakes in summer and freezes in winter gets one joined up solution.
Ready to sort your office heating properly? Get in touch with our commercial gas and heating team for a no obligation survey and a straight recommendation for your building.
Frequently asked questions
What is the best heating system for an office?
For well insulated, multi zone offices, a VRF system or an air source heat pump with smart zoning usually gives the best comfort and lowest running costs, and both can provide summer cooling. For older or budget conscious offices, a high efficiency condensing gas boiler with good controls remains a solid choice. The right answer depends on your building fabric, zones and energy goals, which a survey will confirm.
How warm does an office have to be by law in the UK?
The HSE Approved Code of Practice sets a benchmark of at least 16°C for mainly sedentary office work. There is no legal maximum, though the HSE is reviewing the guidance in 2026.
Are heat pumps good for heating offices?
Yes, in well insulated offices with adequate electrical capacity. Heat pumps run at around 300 percent efficiency and air to air models also cool in summer. Poorly insulated buildings may need fabric improvements or a hybrid system first.
How much does it cost to heat an office?
It depends mostly on insulation, zoning and controls rather than the equipment brand. A gas boiler is cheapest to buy, while heat pumps and VRF cost more upfront but usually run cheaper and last longer. The fastest savings come from smart controls and zoning.
What is the most energy efficient way to heat an office?
A zoned system (VRF or heat pump) that heats only occupied areas to schedule, controlled by a building management system, in a well insulated building. Good controls often save more than swapping the heat source alone.
