How to Choose an Air Conditioning Contractor or Installer
The short answer: a good air conditioning contractor is F-Gas certified, visits the property before quoting, gives you an itemised written quote, names the exact equipment, and can service and repair what they fit. If any of those are missing, keep looking, whether you are cooling one bedroom or a whole office floor.
Air conditioning installation involves handling refrigerants, working with electrics, and getting pipework and drainage right the first time. It's not a job where the cheapest quote is automatically the best value, and it's worth knowing what separates a properly set-up installer from one cutting corners.
We'd rather you ask hard questions before booking any installer, including us, than find out too late that something important was missed.
What to check before you book
- F-Gas certification for the company and the individuals doing the work — this is a legal requirement for handling refrigerant
- Whether they carry out a proper site survey, not just a phone quote
- Whether the quote is written and itemised, not a vague verbal figure
- References or examples of similar work, where available
- Clarity on brands and models being quoted, not just 'an air conditioning unit'
Choosing a contractor for a business
Commercial buyers should add a few checks. Ask how the contractor will work around trading hours, how they record refrigerant and leak checks for your F-Gas obligations, and whether they offer planned maintenance with written reports. A contractor who can cover several sites under one schedule also saves duplicated visits and paperwork.
We are Refcom F-Gas certified, have over 30 years of experience, and cover homes and businesses across Hertfordshire, Buckinghamshire, Bedfordshire and London from Hemel Hempstead, with installation, repairs and maintenance contracts under one roof.
Questions worth asking
- Are you F-Gas registered, and can I see evidence of that?
- Will you carry out a site survey before quoting?
- What's included in the price — installation, commissioning, making good?
- What warranty applies to the unit and to your installation work?
- How do you handle any snags or issues found after installation?
Red flags to watch for
- Quotes given without ever seeing the property
- No mention of F-Gas certification when refrigerant is involved
- Pressure to pay a large deposit upfront with no written quote
- Vague answers about which unit brand or model is being supplied
- No clarity on what happens if something goes wrong after the job
How we approach quoting
We carry out a free site visit before quoting, provide a written, itemised quote with no hidden costs, and can talk through F-Gas certification, warranty terms and the brands we work with — Panasonic, LG and Midea — before you commit to anything.
FAQs
Common questions
Is it worth paying more for a certified installer?
Yes — F-Gas certification is a legal requirement for refrigerant handling, and it also generally reflects a more professional, accountable operation.
Should I get more than one quote?
It's sensible to compare quotes, but make sure they're comparing like for like in terms of unit specification and scope of work.
What if an installer refuses to give a written quote?
That's worth treating as a warning sign — a written quote protects both you and the installer.
Does a lower quote always mean lower quality?
Not always, but a quote significantly below others is worth questioning closely on what's actually included.
What is the difference between an air conditioning contractor and an installer?
In everyday use the words overlap. Contractor is more often used for businesses that take on commercial projects and maintenance contracts, while installer is used more for home jobs. What matters is the certification, survey, quote and aftercare, not the label.
Should my contractor also offer maintenance?
It helps. A company that services and repairs systems as well as fitting them has a reason to install carefully, and one point of contact makes warranty and breakdown questions simpler.
Keep reading
More from our knowledge base
Cost & process guides
Planned maintenance versus reactive repairs: which actually costs less?
Reactive repair looks cheaper until you count downtime, stock loss and the shortened life of the equipment.
System & comparison guides
Multi-Split Air Conditioning Systems vs Single Split
Short answer: choose multi-split for three or more rooms when outside space is tight; choose single splits when rooms are far apart or you want each one independent.
System & comparison guides
Fixed air conditioning vs portable AC units
Portable units are a low-commitment stopgap; fixed split systems are the only realistic long-term answer for a room used regularly.
Talk it through with an engineer.
No call centre — you speak to Ted directly.