Hertfordshire · Heat pump installation
Heat pump installation in Marshalswick, Hertfordshire
Our engineers work in Marshalswick on heat pump installation. A look at the job first, a fixed-price quote and written records at the end.
- Radiators that may be too small for a heat pump
- Finding a place for the outdoor unit
- Planning and permitted development questions
What we do, step by step
Each visit runs to the same pattern: check the plan with you, protect the area, carry out the job, check the system and explain it all to you. On site, the work takes anything from a couple of days for air-to-air to the best part of a week for air-to-water with radiator changes. We plan the visit to Marshalswick from the survey or your photos.
- First we talk through the property and the current system.
- We measure heat loss for every room.
- We design the system, check the radiators and cylinder and look at the outdoor unit position.
- Cost, grant and VAT appear on one fixed-price quote.
- We install, commission and register the system under MCS.
Getting ready for the visit
- Have the make and model of any existing unit to hand
- Let us know where we can park and unload
- Clear a path to the units and the space around them
Getting a price
Photos are the fastest route to a quote: the inside and outside of the property where the work is, plus the rating plate of any unit already there. Add the address and what you’d like done, and many jobs can be priced from that.
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How we handle air source heat pumps in Marshalswick
Many air source heat pumps can be installed as permitted development in England, without a planning application. Conditions include a maximum outdoor unit size of 1.5 m³, compliance with MCS 020(a), use for more than cooling alone and a site outside the curtilage of a listed building. We look at the planning position for your home during the survey. Common call-outs are for not knowing whether a grant applies and moving away from fossil-fuel heating, on hot water cylinders, underfloor heating and radiator systems.
Homes around Marshalswick normally have space for an outdoor unit and a hot water cylinder, so the main questions are heat loss, radiators and the electrics.
Some manufacturers make regular servicing by a qualified engineer a condition of their warranty. Where yours does, a regular service with us keeps that side in order, and every service is written up.
- Location
- Marshalswick (AL4, AL1, AL3)
- Wider area
- Hertfordshire
- Quote
- Fixed after a survey or photos
- Certified
- NICEIC and F-Gas, MCS
- Replies
- We reply the same working day
- Costs
- £8,000–£16,000 before the grant, 0% VAT on homes
- Phone
- 07833 053749
- Updated
- 30 October 2026
Marshalswick questions
Do you cover smaller places like Marshalswick?
Yes, and the size of the place makes no difference to how we work. Send a few details and pictures, and we reply the same working day.
Can I get the Boiler Upgrade Scheme grant in Marshalswick?
Yes, if the home and the heat pump meet the scheme’s rules: Marshalswick is in England, where it applies. The amount depends on the type of heat pump, and the survey confirms which applies. We hold MCS certification, so the application is ours to make for you.
Do I need planning permission for a heat pump?
It depends on the property and where the unit goes. Flats have different limits, conservation areas have extra conditions, and an Article 4 direction can remove the rights, so we check during the survey.
What’s the price of a heat pump installation?
An air-to-water heat pump costs £8,000–£16,000 (0% VAT on homes) before the grant. Eligible homes in England and Wales can get £7,500 through the Boiler Upgrade Scheme, and we confirm eligibility before you commit.
Do I need new radiators for a heat pump?
That depends on the room’s heat loss and the radiator’s size. The survey compares each radiator with the room’s needs, so the quote covers any changes.
What’s the difference between air-to-water and air-to-air heat pumps?
Air-to-water feeds your central heating and hot water, while air-to-air warms and cools rooms directly. With air-to-air, hot water needs another source, and we explain which suits your home.
Will you make a mess?
Floors and furniture near the work are covered with dust sheets before work begins, and the area is kept tidy throughout. At the end, we clear up and show you what we’ve done.
What the work involves, system by system
Air-to-air heat pumps
A £2,500 Boiler Upgrade Scheme grant is available for air-to-air only if it replaces the fossil-fuel heating and meets the full heating demand. It must be installed by an MCS certified installer and be in a home.
The Boiler Upgrade Scheme
Only one grant is available per property, and it can’t replace a low-carbon system, and hybrid systems are not eligible.
Nearby places to Marshalswick
Other services in Marshalswick
What owners can safely do
Good habits make our visits easier, not unnecessary. Simple care keeps the air moving through the system, but the refrigerant circuit, the electrics and the parts you can’t see still need an engineer at the interval the manufacturer recommends.
Keep a note of anything odd: error codes, noises, drips, smells or a drop in performance. It makes our diagnosis quicker, and a photo or a short video of the display is even better.
For landlords and property managers
Managing agents often deal with us directly. Tell us the property, the work and the access arrangements and we’ll come back with a fixed-price quote.
If you look after several properties, we can quote and plan the work across all of them. Every address has its own paperwork, so each one has its own history.
Heat pumps in Marshalswick: local notes
There are 2 conservation areas within a mile of the centre of Marshalswick. That affects heat pumps: listed buildings need consent, and conservation areas limit where the outdoor unit can go under permitted development. Where necessary, we check with the planning team at St Albans City council, which normally handles Marshalswick. About 63% of households live in detached or semi-detached houses, according to the 2021 Census. Houses typically have space for an outdoor unit and a hot water cylinder.
If your home is listed, like Batchwood Hall about 2 miles west, listed building consent comes before any heat pump work. Live in one of the older houses around Saint Mary's? Expect the survey to look closely at heat loss and at the building’s planning status.
Marshalswick is about 1 mile north-east of St Albans, in Hertfordshire. If you need air source heat pumps in Marshalswick, please give us a ring on 07833 053749 or send an email for a fixed-price quote. We work across London and the South East, Marshalswick included. Our list for Hertfordshire has 381 entries, and Marshalswick is one. You can also see our page for London, roughly 21 miles from Marshalswick.
From Milvus Road, Jersey Lane and Sandpit Lane to the smaller roads in between, nowhere is left out. We cover every part of the AL4, AL1 and AL3 postcode area and the streets around it. Places around Marshalswick that are also on our list: Sandridge (1 mile north), Bernards Heath (1 mile west), St Albans (1 mile south-west), Childwick Green (2 miles north-west) and Sopwell (2 miles south-west). Further out, we also cover Watford (8 miles south-west), Hemel Hempstead (7 miles west), Stevenage (11 miles north-east) and Welwyn Garden City (5 miles north-east).
Local landmarks in Marshalswick
Typical jobs here are in properties near The Baton pub, Sandringham School and Clarence Park, among other places. The nearest railway station is St Albans station, about 1.3 miles south-west. Well-known places in the area include St Albans Musical Museum (0.8 miles south-west) and The Maltings (1.6 miles south-west). The countryside around Marshalswick includes The Wick Local Nature Reserve and Verulamium Lake.
From one of our customers
“Very professional from the initial survey through to installation. The engineer explained everything clearly and the quote was exactly what we paid. Would not hesitate to recommend AirCon Doctor.”
David W., Haywards Heath