Exhaust Air Heat Pumps in Essex: 6 Tips to Maximise Efficiency

Maximising the Efficiency of Exhaust Air Heat Pumps

Exhaust air heat pumps (EAHPs) are a smart and energy-efficient solution for heating, hot water, and ventilation, particularly in well-insulated homes. By extracting warmth from the indoor air that would otherwise be lost through ventilation, these systems can significantly reduce heating costs. However, like all heating systems, they need to be properly managed for optimal performance—especially during colder months.

If you’re considering exhaust air heat pumps for your property, or already have one, here are six practical tips to help you maximise efficiency and get the most out of your system.

1. Optimise Temperature Settings

One of the biggest mistakes homeowners make with exhaust air heat pumps is constantly adjusting the thermostat. Frequent changes force the system to work harder, reducing efficiency.

• Keep your thermostat at a steady, comfortable temperature.
• Use weather compensation controls, if available, to adjust the system based on outdoor conditions.
• Avoid setting the system too high in winter, as exhaust air heat pumps are designed to work at lower, consistent temperatures.

A well-balanced temperature setting helps maintain efficiency while keeping your home warm.

2. Maintain Proper Insulation

Exhaust air heat pumps work best in airtight, well-insulated homes. Since they recycle warm air from the inside, any heat loss from poor insulation can make them work harder than necessary.

• Ensure walls, floors, and loft spaces are properly insulated.
• Check for draughts around doors and windows and seal any gaps.
• Consider adding external wall insulation for older properties that might struggle with heat retention.

If you’re in Essex and looking to improve home efficiency, our team at Alternative Heating Solutions can help assess your property for insulation upgrades alongside your EAHP.

3. Keep the System Running Efficiently

Exhaust air source heat pumps work best when they run consistently, rather than being switched on and off. This allows them to maintain a steady indoor climate without excessive energy consumption.

• Avoid completely turning the system off in winter, as restarting it uses more energy.
• If you have underfloor heating, keep it at a low but consistent temperature.
• Regularly check that your exhaust air heat pumps are functioning correctly, particularly during colder months when it’s working harder.

By allowing your EAHP to operate steadily, you’ll ensure it performs at peak efficiency while keeping your home warm.

4. Maintain Proper Airflow

Since exhaust air heat pumps extract heat from indoor air, ensuring a smooth and unobstructed airflow is crucial. Blocked filters or vents can cause the system to work inefficiently, leading to reduced performance and higher energy costs.

• Regularly clean or replace air filters to prevent dust buildup.
• Keep ventilation ducts and grilles free from obstructions, such as furniture or curtains.
• Check outdoor air intakes to ensure they’re not blocked by leaves or debris.

Good airflow allows the system to work at full capacity, improving heat recovery and reducing strain on the pump.

5. Use Smart Controls

Modern exhaust air heat pumps often come with smart control features that allow for remote operation and optimisation. Taking advantage of these features can help you cut energy waste and improve efficiency.

• Invest in a smart thermostat that learns your heating habits and adjusts accordingly.
• Set schedules that align with your daily routine, so the system isn’t running at full power when it’s not needed.
• If your EAHP is compatible with solar PV, integrate it to maximise energy savings.

By using intelligent heating controls, you can fine-tune your heat pump’s performance and make your home even more energy-efficient.

6. Schedule Regular Servicing

Routine maintenance is essential for keeping your exhaust air heat pump running smoothly. A well-maintained system will perform more efficiently, last longer, and require fewer costly repairs.

• Schedule a professional service at least once a year.
• Check refrigerant levels and airflow to ensure optimal operation.
• If your EAHP starts making unusual noises or isn’t heating as effectively, get it checked immediately.

As trusted exhaust air source heat pump installers in Essex, we offer comprehensive maintenance and servicing to keep your system in top condition all year round.

Worried About the Cost of Exhaust Air Heat Pumps? The New Warm Homes Grant Could Help!

The Warm Homes Grant, launching in April 2025, is a government initiative designed to tackle fuel poverty and improve home energy efficiency while supporting the UK’s net zero targets. Eligible homeowners and private renters can receive up to £15,000 for energy performance upgrades like insulation and solar panels, plus an additional £15,000 for low-carbon heating solutions such as air source heat pumps. The grant aims to reduce heating costs, make homes more comfortable, and encourage the transition to renewable energy. If you’re in Essex and considering an exhaust air heat pump, this funding could help make your home warmer and more energy-efficient.

You can read more about this in our recent blog “A Guide to the New Warm Homes Grant”. 

Final Thoughts on Maximising the Efficiency of Exhaust Air Heat Pumps

Exhaust air heat pumps are a fantastic way to heat and ventilate your home efficiently, but they require proper management to perform at their best. By following these six tips—optimising temperature settings, improving insulation, maintaining steady operation, ensuring proper airflow, using smart controls, and scheduling regular servicing—you can maximise efficiency and keep your home comfortable even during the coldest months.

If you’re looking for professional exhaust air source heat pump installers in Essex, or need advice on getting the most out of your current system, Alternative Heating Solutions is here to help. Contact us today to discuss your heating needs and find the best energy-efficient solution for your home in Essex.