ashp faq's
Welcome to our Air Source Heat Pump FAQ page - by Regen Renewables, your trusted partner in renewable heating solutions across the UK.
Here we answer the most common questions about Air Source Heat Pumps and the Government's Boiler Upgrade Scheme (BUS) - helping homeowners reduce energy bills, cut carbon emissions, and access funding support.
01
What is an Air Source Heat Pump?
An Air Source Heat Pump (ASHP) is an energy-efficient system that extracts heat from the outside air and uses it to heat your home and hot water.
It works even in cold weather and can replace or work alongside a traditional boiler.
03
What are the benefits of installing an Air Source Heat Pump?
Lower heating bills (especially when replacing oil, LPG or electric systems).
- Up to 70% lower carbon emissions.
- Compatible with Solar PV systems.
- Works efficiently year-round.
Eligible for the Boiler Upgrade Scheme (BUS) grant.
05
What is The Boiler Upgrade Scheme (BUS)
The Boiler Upgrade Scheme (BUS) is a UK Government grant designed to encourage homeowners to switch from fossil fuel boilers to renewable heating systems such as Air Source Heat Pumps or Ground Source Heat Pumps.
Under the scheme, you can receive a £7,500 grant towards the cost and installation of an eligible heat pump.
07
How does the BUS application process work?
- Free consultation - We assess your property and confirm eligibility.
- Quote and proposal - You receive a detailed breakdown of costs and savings.
- Voucher application - Regen Renewables applies to Ofgem for your BUS grant
- Installation - Once approved, our MCS-certified engineers install your Heat Pump.
- Grant redemption - The £7,500 is deducted directly from your installation cost.
09
Can I combine the BUS with other grants or funding?
In most cases, the BUS grant cannot be combined with other government-funded schemes for the same installation.
However, homeowners may still benefit from energy-efficiency loans, solar PV incentives, or private financing options - contact us for advice.
11
Do Air Source Heat Pumps work in the Winter?
Yes, even at -15°C.
02
How does an Air Source Heat Pump work?
ASHPs absorb heat from the air using a refrigerant cycle — similar to how your fridge works, but in reverse.
This low-temperature heat is then compressed and converted into usable warmth for your radiators, underfloor heating, and hot water tank.
04
Is my home suitable for an Air Source Heat Pump?
Most UK homes can benefit, especially if they are well-insulated. During your free home assessment, Regen Renewables will evaluate:
- Property insulation levels
- Existing heating system
- Space for external unit
- Hot water cylinder suitability
We'll then recommend the most efficient and cost-effective setup for your home.
06
Who can apply for the Boiler Upgrade Scheme?
You may be eligible if:
- You own the property (home or small business premises)
- The property is in England or Wales
- You are replacing an existing fossil fuel system (gas, oil, LPG, etc).
- Your home has a valid EPC with no outstanding insulation recommendations.
Don't worry - Regen Renewables handles the entire BUS application process on your behalf.
08
How long does it take to get the grant?
Typically, BUS vouchers are issued within 2-4 weeks after application approval.
Installation can then proceed immediately, and Regen Renewables manages all communication with Ofgem for a seamless process.
10
Air Source Heat Pump Installation with Regen Renewables
At Regen Renewables, we're experts in designing, supplying and installing MCS-certified Air Source Heat Pump systems across the UK.
Our goal is simple: to help you transition to clean, low-carbon heating with minimal hassle and maximum savings.
12
Can I keep my existing radiators?
Sometimes, we'll inspect your current radiator specs when surveying your property.
Once we can design a system, we will be able to confirm whether you can keep your existing radiators.