Find a Heating Engineer you can trust in Welwyn.

Choose from 220 Heating Engineers, all rated by people like you.

Over 124 reviews & an average rating of 4.5/5 stars, you'll find the right pro

Choose and shortlist

Use the shortlist button to select up to 4 tradespeople, enter your project details and press send

or

Keen to get on with the job?

Get up to 4 quotes from local Heating Engineers near you

View Shortlist
Verified Pro
Our core business is the supply and installation of air conditioning systems, specifically air-to-air source heat pumps. W...
Verified Pro

Walsh Plumbing

1 review(s)
Offers services in WELWYN
Walsh Plumbing Ltd We understand that buying a new boiler can be an expensive purchase, which is why Walsh Plumbing str...
Verified Pro

Gas Works MK

0 review(s)
Offers services in WELWYN
Welcome to Gas Works MK – Your Local Gas Engineer You Can Trust With over 17 years of experience in the trade, I offer ...
Verified Pro

WarmZilla

6 review(s)
Offers services in WELWYN
The modern way to buy a new boiler Save yourself time and money buying your new boiler by choosing WarmZilla.
Verified ProOver 10 Reviews

Boxt

17 review(s)
Offers services in WELWYN
BOXT are the UK’s no.1 ranked gas installation company as voted for by our TrustPilot customers Buy a new Worcester Bos...
Verified Pro

Electric Works London

0 review(s)
Offers services in WELWYN
At Electric Works London, our electricians and installers offer 24 hour electricity service to all customers. We have done...

Recent Heating Engineer Enquiries

09 Aug

Heating | Gas | Boiler Replacement

Welwyn Garden City - AL7

Enquiry from: Panna C

Start Date: Immediate

customer made an enquiry for gas boiler replacement and confirmed on the quotatis site they would like quotes from a heating engineer.mrs lives in the welwyn garden city area and would like a call to ...

Post a similar request >

05 Mar

Heating | Gas | Boiler Replacement

Welwyn Garden City - AL7

Enquiry from: URSZULA G

Start Date: Immediate

customer made enquiry for a gas boiler replacement in welwyn garden city. they are unsure what brand to go for and would like advice. please contact to appoint

Post a similar request >

03 Feb

Heating | Gas | Boiler Repair / Service

Welwyn Garden City - AL7

Enquiry from: Panos K

Start Date: Immediate

Would like a quote for an annual service of our boiler and to fix a hot water supply issue (hot water coming through not on demand, but only if the heating is on)

Post a similar request >

12 Oct

Heating | Gas | Boiler Replacement

Welwyn Garden City - AL7

Enquiry from: James S

Start Date: Immediate

customer in welwyn garden city areas is looking to do a couple of projects at the moment, and would like quotes for gas boiler replacement.confirmed interest via email at 12/10/2021 20:01.please call ...

Post a similar request >

20 Jul

Heating | Gas | Boiler Replacement

Welwyn - AL6

Enquiry from: Victoria B

Start Date: Immediate

Customer living in Welwyn area made an enquiry for new boiler quotes via one of our websites. Customer confirmed interest via , SMS at 22:36 Mr needs advice on the boiler make and model to choose Ple...

Post a similar request >

10 Feb

Heating | Gas | Boiler Replacement

Welwyn - AL6

Enquiry from: Simon G

Start Date: Immediate

replace an existing potterton boiler with a bosch worcester are you the property owner: owner of the property is this for a residential or commerial building: domestic type of current boiler: gas what...

Post a similar request >

20 Jan

Heating | Gas | Boiler Repair / Service

Welwyn - AL6

Enquiry from: Jill P

Start Date: Immediate

Gas inspection as selling property

Post a similar request >

05 Jan

Heating | Gas | Boiler Replacement

Welwyn - AL6

Enquiry from: Roger W

Start Date: Immediate

new potterton boiler required

Post a similar request >

29 Dec

Heating | Gas | Boiler Replacement

Welwyn Garden City - AL7

Enquiry from: MR A

Start Date: Immediate

Customer is looking to replace their gas boiler. They are not sure what brand or model to go for so please call to discuss what options would be best for their home. Gas boiler replacement Supply and...

Post a similar request >

20 Oct

Heating | Gas | Boiler Replacement

Welwyn - AL6

Enquiry from: Doug C

Start Date: Immediate

To replace the existing boiler a Biasi Advance HE, as now over 10 years old and developed a fault.

Post a similar request >

08 Oct

Heating | Gas | Boiler Replacement

Welwyn - AL6

Enquiry from: Victoria B

Start Date: Immediate

Customer made an online enquiry for a new gas boiler. Mr confirmed interest via Considering a range of options Mr lives in Welwyn area Please call to arrange appointment and discuss

Post a similar request >

03 Oct

Heating | Biomass Boiler

Welwyn Garden City - AL7

Enquiry from: Za L

Start Date: Immediate

Call any-time Type of building: Semi-detached Number of bedrooms: 4 Access available for delivery of fuel: Yes How became interested in biomass system: renewable heating interested Quote reques...

Post a similar request >

03 Sep

Heating | Oil | Boiler Replacement

Welwyn - AL6

Enquiry from: Vaghji P

Start Date: Immediate

Call anytime. Extent of work: New Boiler Type of building: Detached Fuel: Oil Number of radiators: 0 Quote requested on boiler replacement

Post a similar request >

28 Jul

Heating | Gas | Boiler Replacement

Welwyn Garden City - AL7

Enquiry from: Aravin V

Start Date: Immediate

Customer is looking to replace their gas boiler. They are not sure what brand or model to go for so please call to discuss what options would be best for their home. Gas boiler replacement Supply and...

Post a similar request >

27 Jul

Heating | Gas | Boiler Replacement

Welwyn Garden City - AL7

Enquiry from: Steve E

Start Date: Immediate

Customer in the Welwyn Garden City area made an enquiry online for a new boiler and is waiting for a call. Confirmed interest. Please contact to arrange an appointment to discuss options for their ho...

Post a similar request >

24 May

Heating | Gas | Boiler Replacement

Welwyn Garden City - AL7

Enquiry from: Munćan V

Start Date: Immediate

new gas central heating

Post a similar request >

12 May

Heating | Gas | Boiler Replacement

Welwyn Garden City - AL7

Enquiry from: Vladimir M

Start Date: Immediate

combi boiler are you the property owner: owner of the property is this for a residential or commerial building: domestic type of current boiler: gas

Post a similar request >

07 Apr

Heating | Gas | Boiler Repair / Service

Welwyn - AL6

Enquiry from: Alison L

Start Date: Immediate

the internal element in my hot water tank no longer works. it is dual tank as have economy 10 electricity. Are you the property owner: Owner of the property Property Type: Other What work do you requi...

Post a similar request >

20 Feb

Heating | Gas | Boiler Replacement

Welwyn - AL6

Enquiry from: Ruth J

Start Date: Immediate

Removal and disposal of old boiler please. The new boiler set up in the same place and in the way required by Ideal for their 10 year warranty - the flush and magnetic strip and I can’t recall what ...

Post a similar request >

04 Feb

Heating | Gas | Boiler Replacement

Welwyn Garden City - AL7

Enquiry from: Lee M

Start Date: Immediate

Customer made an online enquiry for Gas Boiler Replacement and is waiting for a call. Confirmed interest via email/SMS and needs advice on boiler models suitable for their home.

Post a similar request >

How much do Heating Engineer services cost?

How much do Heating Engineers in Welwyn cost?
Prices for Heating Engineers around Welwyn can be very different depending upon the sort of task that you require to have actually done in your house. It's the question we get asked a lot "how much do Heating Engineers in Welwyn cost?". It's often really good to have an idea of how much a Heating Engineer will likely cost for their work. Rates are going to rise and fall based upon the products and also the tradesperson chosen. The list reveals the types of work that Heating Engineers typically do and the average cost series of these jobs. Some jobs take longer to finish than others so costs do vary by job.

Jobs that Heating Engineers in Welwyn can do:

View our Heating Engineer cost guide View our Heating Engineer advice

The average price
of a Heating Engineer in Welwyn is:

£2,103

Heating Engineer job Heating Engineer cost in 2025
Combi boiler in Welwyn £875-£2,069
Lpg boilers in Welwyn £1,710-£3,490
Biomass boilers in Welwyn £7,500-£11,500
New Oil boiler in Welwyn £2,125-£3,975
Boiler repair and service in Welwyn £71-£151
Electric heaters in Welwyn £775-£1,250
Eco boiler (hhrco) in Welwyn £875-£2,069
Boiler finance in Welwyn £875-£2,069
Heating control system in Welwyn £225-£345
Micro chp boiler in Welwyn £3,750-£5,750
Oil boiler repairs & servicing in Welwyn £82-£139
Gas works in Welwyn £60-£92
Boiler cover in Welwyn £5-£25
Commercial Gas Boiler in Welwyn £1,300-£3,850

Related Heating Engineer searches in Welwyn

Heating Engineer FAQs

Do I need to use an OFTEC certified installer?

The Oil Firing Technical Association or OFTEC operate a competent persons scheme to certify installers. It’s always recommended to use an installer with this certification as it proves they have the training and expertise to properly install your boiler and give you realistic advice on the efficiency of your system. Also, OFTEC registered installers offer Workmanship Warranties to protect you if there are any problems after installation.

how much is a gas safety certificate?

How Much Is A Gas Safety Certificate?

If you’re a landlord in the UK, then you’d know a gas safety certificate is a legal requirement. If yes, then you’d probably like to know how much it’ll cost to get a gas safety certificate so you can make plans on obtaining one for your property. In this article, you’ll find all you need to know about the amount you’re expected to pay for a gas safety certificate in the UK.

First and foremost, let’s look into the use of the certificate. Basically, a gas safety certificate is the legal inspection of your property’s gas appliances which would be done on an annual basis. Only an approved Gas Safe engineer is allowed to carry out this statutory check. Ultimately, if you own rental properties in the country, this is a requirement you can’t afford to overlook to ensure the safety of your tenants.

Furthermore, included in this inspection are each and every gas appliances, chimneys, pipework as well as flues in the property. In recent times, several individuals make use of fewer gas appliances which ultimately implies that they may only need the servicing of their gas fire. Once you’ve passed the inspection, you’ll be given your CP12 certificate which must be kept for a minimum of two years. A copy should also be provided to your tenants within 28 days of issue. So how much will it cost to get a gas safety certificate?

Depending on your location in the UK as well as the number of gas appliances incorporated, the average cost of a gas certificate will range between £60 to £90. The Gas Safe engineer will carry out the task as a fixed and statutory job.

How do I re-pressurise a boiler?

Re-pressurising your boiler means that you allow more water to enter system via the filling loop. It can be easy to re-pressurise your boiler yourself. Always check your manual, but there are some simple steps you can take to restore pressure to your boiler:

  1. Switch off your boiler and let it cool completely
  2. Make sure both ends of your filling loop are attached
  3. Open both valves to allow cold water into the system – you’ll hear it start to move
  4. Look out for your pressure gauge to show 1.5 bar
  5. Close both valves
  6. Switch your boiler back on
  7. Undo both ends of your filling loop and remove it. Remember some water might come out, so be ready to catch some spillage!
how much is landlord gas certificate?

How Much Is A Landlord Gas Certificate?

Do you know as a landlord in the UK, not only does the law requires you to conduct an annual check on all your gas appliances and chimney, but you’d also have to pay for it? Hence, giving birth to the commonly asked question, how much is a landlord gas certificate? With so many variances in CP12 certificate prices everywhere, it can be so confusing knowing the actual one you’re expected to pay. Just by surfing the internet alone you’d come across loads of ads claiming they can help you with a cheap gas safety certificate only to discover that reverse is the case when you reach out to them. Here, you’ll get to know the real amount you’re expected to pay for the annual checks on your gas appliances and chimney.

First and foremost, let’s look at what a Gas Safety Certificate really is. This is a certificate that’s given out to landlords and property management companies after a check has been carried out on all their gas appliances and chimney. This statutory check is expected to be done every 12 months to ensure the safety of all those who make ue of your rental property. Homeowners living in ther property are not required by the law to conduct annual gas safety check, but it’s highly recommended that you get in touch with a Gas Safety engineer to ensure the safety of both you and your loved ones.

As a landlord in the UK, to get all your gas appliances and chimney inspected by an approved Gas Safety engineer and obtain your Gas Safety Certificate, you’re expected to pay within a range of £55 to £65. However, you should note that this cost will increase depending on the number of gas appliances you have (about 30% increase for each additional gas appliance).

does nest thermostat work with oil boiler?

The simple answer to this question is yes. The Google Nest thermostats are built in such way that makes it compatible with most 24V systems including the older systems. The device is functional with all common types of fuel such as electricity,natural gas as well as oil. However, before purchase it is vital to determine if your thermostat is also compatible. What’s more? The Nest thermostats is also designed to be usable even without the existence of a C wire (common wire) in your home, although a new C wire installation may be required.

Furthermore, Nest Learning Thermostat is compatible with multiple central heating system such as combi boiler systems, air source and ground source heat pumps (heating only) as well as heat only boiler. Now let’s take a look at the Nest thermostat compatibility!

• The majority of the 24 V systems ( including older systems) are compatible with Google Nest thermostat. They can be incorporated with each and every common types of fuel such as oil, natural gas as well as electricity.

• Prior to the installation of Google Nest thermostat, you can make use of the Google Home or Nest app for proper guidance and to notify you if your system is compatible. It will also give you a bespoke thermostat wiring guide.

• To check the compatibility of your system, you can also check with the Google’s online compatibility checker before purchase.

How long does a boiler last?

If you get the right size boiler for your home and you get it serviced regularly, your boiler could last up to 15 years. It may even last longer than this, but you’ll find that your boiler begins to become less efficient as it gets older. Also, as technology improves, a boiler older than 15 years may not be the most efficient one on the market.

how does a gas boiler work?

A boiler is simply the most important part of a central heating system as it generates the heat that warms up the home or property. Basically, the appliance or small furnace makes use of gas, LPG or oil in order to fuel its operation. However in the UK, most boilers are usually fuelled by natural gas which is supplied automatically from the national gas grid. And depending on how it operates, there are various types of boilers.

Typically, a gas central heating boiler will have multiple pipes entering from underneath. While one pipe supplies the boiler with gas from the mains gas supply, another pipe allows cold water to enter the boiler to be heated, the last pipe then enables hot water to exit the boiler so it can be distributed around the home.

✓ There are fuel jets and heat exchangers inside the boiler. When the heating is turned on, a valve is opened to allow the mains supply gas to enter a sealed combustion chamber in the boiler. There are multiple little valves which permit the entry of the gas before being ignited by an electric ignition switch. These jets heat a metal component in the boiler known as a heat exchanger which works to transfer the heat to the cold water pipe and heat up the water.

✓ Once the water has been heated to the target temperature, it’s then pumped through a circuit of pipe which runs around your home by an electric pump.

✓ The heated water enter each radiator, is then transmitted via a closed loop and radiates heat into each room.

✓ Once done travelling through all radiators, the water then returns to the boiler at which it must have been cooled. Therefore, the boiler will have to reheat following the same process before circulating. The water can only be drained by a professional Gas Safe engineer

how to install a gas cooktop in an island?

How To Install A Gas Cooktop In An Island

Are you thinking about installing a gas cooktop in your kitchen island? If yes, then you must know that there are clearance requirements that must be met (before you proceed) between the cut out and the countertop’s edge. Basically, there are incremental requirements for island installation due to the fact that it does not make an assumption that the product is going to be fitted against a rear wall that acts to protect the back of the unit. As a result, while doing an island install we must put the safety of the product into consideration much more that we do a standard install. What’s more? This island clearance requirement develops from a third-party agency and is a standard with all brands. So how do you install a gas cooktop in an island having the aforementioned requirements in mind?

• Use a foil tape to line the inside edges of the cut out. The function of this is to prevent heat damage as well as countertop’s discolouration. Put the cooktop top on a secured surface.

• Identify the pipe coming out of the cooktop’s side or bottom and brush onto the threads of the manifold entrance.

• Pass the pressure regulator onto the entrance of the manifold and make use of a wrench to tighten it.

• Brush the pipe joint compound onto one of the flare union adaptor’s threads and pass it into the regulator’s open end. Make it slightly tight with a full turn of the wrench.

• Connect the flare union adaptor’s open end with the flexible appliance connector hose, upon brushing on pipe joint compound.

• Put foam tape on the cooktop underside’s edges, if your cooktop comes with a glass burner plate.

• Turn the cooktop to set it into the cutout.

• Apply pipe-joint compound onto the flare union adaptor left and secure it firmly into the gas shutout valve.

• Connect the flexible hose connector’s free end with the flare union adaptor.

Heating Engineer help and advice

How it works

Tell us about your Heating Engineer project

Answer a few quick questions to help us match you with the right Heating Engineer

Get up to 4 free quotes

Receive no-obligation quotes from 4 Heating Engineers working in Welwyn.

Pick the right pro for you

Compare prices, customer reviews and services, and hire the right Heating Engineer.

Are you a Heating Engineer in Welwyn?

View our open Heating Engineer jobs near you

Join today
View Shortlist