A hybrid heating system pairs an air source heat pump with your existing boiler. The heat pump runs for most of the year and the boiler steps in on the coldest days. Interest-free credit up to £30,000, subject to status. Call 0141 230 0198 or fill in the form to arrange a no-obligation survey.
These are the questions we hear most often from homeowners considering a hybrid heating system in Scotland. If you have a question that is not covered here, call us or send the form and we will answer it directly. No question is too basic — understanding how the system works is the first step in deciding whether it suits your home.
Last updated: 28 October 2026
Reviewed by the Scottish Energy Efficiency team.
What is a hybrid heating system?
A hybrid heating system pairs an air source heat pump with your existing boiler. The heat pump runs for most of the year, and the boiler takes over on the coldest days. An intelligent controller manages the switch automatically.
The two heat sources work together through a controller that monitors outdoor temperature and indoor demand. When conditions are mild, the heat pump handles everything, extracting warmth from the outside air even at sub-zero temperatures. As the outdoor temperature drops, the controller brings the boiler in to assist or take over. This dual-source approach means you are never relying on a single technology, and the boiler acts as both a backup and a peak-load supplement.
How much does a hybrid system cost?
A typical hybrid installation ranges from around 6,000 to 12,000 pounds, subject to survey. The exact price depends on property size, heat pump capacity, radiator changes, and whether a new cylinder is needed.
This range is typical, subject to survey, and covers the heat pump, indoor module, controller, installation, and commissioning. It assumes your existing boiler can be retained. The only way to get an accurate price is through a survey, which produces an itemised written proposal. The survey is no-obligation and takes two to three hours. You are under no obligation to proceed after receiving it.
Can I keep my existing radiators?
In most cases yes. The boiler can run radiators at higher temperatures on cold days, so existing radiators may be adequate. The survey checks each room and flags any radiators that need upgrading.
Heat pumps operate at lower flow temperatures than boilers, which means each radiator emits less heat at those temperatures. In a hybrid system, the boiler can still run at higher temperatures on the coldest days, so existing radiators may be adequate. The survey calculates the heat loss for every room and compares it against the output of each existing radiator at the heat pump flow temperature. Where a radiator is undersized, it can be replaced individually — you do not need to replace every radiator at once.
How long does installation take?
Installation takes two to four days after the survey is complete and components are delivered. The survey itself takes two to three hours.
The process begins with the survey, then a proposal is prepared. If you proceed, components are ordered. Installation itself takes two to four days depending on complexity, the number of radiator changes, and whether a new cylinder is required. The outdoor unit is mounted, indoor components are connected, and the controller is wired. The system is commissioned on the final day, which includes setting the bivalent point, balancing radiators, and testing the hot water cycle.
Is my home suitable for a hybrid system?
Hybrid systems suit homes with an existing boiler, a wet radiator system, and insulation that allows the heat pump to operate efficiently. The survey confirms suitability — and we will tell you honestly if it is not the right fit.
Key factors are an existing boiler that is still serviceable, radiators already in place, and insulation levels that allow the heat pump to work efficiently. Homes with no boiler, very poor insulation, no space for the outdoor unit, or an electrical supply that cannot be upgraded may not be suitable. The survey checks all of these. If any are a problem, we say so during the survey — not after installation.
Frequently asked questions
What areas of Scotland do you cover?
We cover the central belt and most of mainland Scotland. The surveyor confirms whether we can reach your area when you enquire.
Can I use the system for hot water as well as heating?
Yes. The heat pump heats the hot water cylinder for most of the year, with the boiler taking over when the heat pump cannot reach the target temperature.
How noisy is the outdoor unit?
Modern heat pump outdoor units are quiet — typically around 40 to 50 decibels at one metre. The survey considers proximity to neighbours and boundaries.
What happens if the heat pump breaks down?
The boiler acts as a backup. If the heat pump is serviced or repaired, the boiler can handle heating and hot water independently.
How do I book a survey?
Fill in the form on this page or call us on 0141 230 0198. We will arrange a survey at a time that suits you.
Fill in the form and we will call you within one working day to arrange a survey. No obligation · We install through MCS-certified partners · Scottish homes and businesses
