Best air conditioning installers in Essex: how to choose

Searching for the best air conditioning installers in Essex brings up a long list of names, and most of them say similar things. The useful question is not who sounds best, but who can prove they will do the job legally, safely and tidily, and still be around when you need them next year.

This guide gives you a simple checklist to use with any installer, the questions worth asking before you book, and the red flags that should make you walk away. At the end, we explain honestly how we measure up against each point.

Work through these points with every installer you are thinking about. A good one will answer each of them without hesitation.

1. F-Gas certification. The company must hold F-Gas certification, and the engineer must hold a personal F-Gas qualification.
2. Electrical registration. Ask whether they are registered for domestic electrical work, for example with NAPIT.
3. Insurance. Ask what insurance they hold for working in your home.
4. A fixed written price. The quote should be in writing and say exactly what is included.
5. Who actually fits it. Find out who will turn up on the day and whether they work for the company.
6. Commissioning and paperwork. You should get a record that the system was tested and commissioned.
7. Manufacturer warranty. Ask how long the warranty is on the system they are quoting and what it needs from you.
8. Aftercare and servicing. Check they offer servicing and can help if something goes wrong.
9. Local and reachable. You want a real address and a phone number that someone answers.

F-Gas certification and company registration

The refrigerant inside an air conditioning system is a fluorinated gas, or F-gas. Under the gov.uk guidance on F-Gas company certification (opens in a new tab), a company that installs or services this equipment for other people must be certified by an approved body. REFCOM is one of those bodies, and its register is public, so you can check a company yourself in a couple of minutes. Our F-Gas registered installer guide explains how.

Part P electrical registration

Most installs need an electrical supply to the outdoor unit, and some need a new circuit. Electrical work in homes in England must meet Part P of the Building Regulations. An installer registered with a scheme such as NAPIT can self-certify the electrical work they do, so you do not have to arrange separate sign-off.

A fixed written price

A good quote names the system, the size in kW, and the price including VAT. It should also say what is included, such as pipework, the electrical connection, testing and commissioning, and what would cost extra. A vague figure on the back of a business card is not a quote.

Use these on the phone or at the survey. Write the answers down so you can compare.

• What is your F-Gas certificate number, and can I check it on the REFCOM register?
• Who will carry out the installation, and are they qualified?
• Is your price fixed, in writing and including VAT?
• What is not included, and what could make the price change?
• Will you survey the room before confirming the size?
• What paperwork will I get when the job is finished?
• How long is the manufacturer warranty, and does it have any conditions, such as servicing?
• Do you service and repair the systems you fit?
• Where are you based, and how do I reach you if something goes wrong?

Some warning signs are easy to spot once you know them.

• Cash only. A company that will only take cash may not want a paper trail.
• No F-Gas number. If they cannot or will not give you one, do not book them.
• Pre-charged DIY kits. Some sellers offer kits that you or a handyman fit. You get no commissioning record from a certified installer, and you may not meet the manufacturer's warranty conditions.
• Vague quotes. "Around a thousand, depends what we find" leaves room for the price to grow on the day.
• No survey. Sizing a system without looking at the room is guesswork.
• Pressure to decide now. A fair price will still be fair next week.

An installer based near you can get to you more easily for the survey, the install and any follow-up visit. More importantly, a local business relies on its name in the area. Look for a real address, check the areas they cover, and read what other customers in your part of Essex have said about them.

Local does not replace the checks above. A nearby installer still needs F-Gas certification, a written price and proper paperwork.

A new system comes with a manufacturer warranty, but terms vary by brand and model. Some warranties have conditions, such as installation and commissioning by a certified installer, or regular servicing. Read the terms for the exact model you are quoted, not a general promise.

Keep your paperwork in one place: the quote, the commissioning record, the electrical certificate, the warranty details and any service records. If a part fails in a few years, this is what you will be asked for.

A proper installation is more than fixing a unit to the wall. The refrigerant pipework has to be pressure tested to check for leaks before the system runs, then the system is tested and commissioned to check it works as it should. The electrical supply has to be safe and suitable for the load. These steps are why the law asks for qualified people to do the work.

Ask the installer to explain what tests they carry out and what record you will get. A good one will be happy to talk you through it in plain words.

Air conditioning needs looking after, just like a boiler. We recommend a service once a year to keep the filters and coils clean, check the system is working properly and keep a record for your warranty. Before you book any installer, check they can service the system later and help if something goes wrong. Our air conditioning servicing page explains what a service covers.

We would rather you check us against the list than take our word for it. Here are the facts.

• F-Gas: We are F-Gas REFCOM registered, number REF1022701. You can search for it on the REFCOM register.
• Electrical: We are NAPIT registered, number 64714, for Part P electrical work.
• Fixed price: Our prices are fixed and published on our prices page, from £1,400 for a single room. Each price is fully supplied, installed, tested and commissioned, including VAT. The one common extra is a condensate pump at £200, needed only if the indoor unit cannot drain to an outside wall. Multi-room systems are quoted individually.
• Survey: The survey is free, and we check the size and position before you commit.
• Who fits it: The business is led by Oliver, who has over 20 years of trade experience. Find out more about us.
• Warranty: The warranty depends on the package you choose. Budget comes with a 3-year parts warranty, and Gold, our recommended package, comes with a 10-year parts warranty.
• Servicing: We recommend and carry out annual servicing, and we repair systems too.
• Local: We are based in Bowers Gifford, near Basildon, open Monday to Friday, 08:00 to 17:00. You can read what customers say on our reviews page.

For a step by step look at what happens on the day, see our air conditioning installation page.

Use our price tool to see your fixed price for your room and package, or contact us to book a free survey. You can also call us on 01268 264002.