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Expert HVAC Services in Waterlooville
Gas-Fix, established by two former British Gas trained engineers with over 25 years of combined experience, specialises in gas central heating, boiler installations, and power flushing. Our team of Gas Safe registered engineers delivers comprehensive services, from fault diagnosis and repairs to system upgrades, prioritising reliability and customer satisfaction. We exclusively install boilers from reputable manufacturers with proven track records, ensuring tailored solutions for domestic and commercial clients across the south coast.

As a Worcester Accredited Installer and Check-a-Trade member, we adhere to rigorous industry standards, evidenced by our 9.9/10 customer rating. Our commitment to transparency includes fixed pricing, 24/7 emergency support, and flexible financing options, reflecting our dedication to accessible, high-quality heating solutions.
Services
Boiler installation Boiler repairs Power flushing Commercial heating Air conditioning
Highlights and features
  • 25+ years of combined experience in gas heating systems
  • All engineers are Gas Safe registered
  • Worcester Accredited Installer status
  • Fixed pricing with no hidden fees
  • 24/7 emergency repair service available
Associations and certifications
  • Gas Safe Register
  • Worcester Accredited Installer
  • Check-a-Trade
What people say
Reliable installations Prompt repairs Professional engineers Competitive pricing Excellent customer service
Services
Boiler installation
We install high-efficiency boilers from trusted manufacturers, including Worcester models with up to 10-year warranties. Our engineers ensure compliant, future-proof installations tailored to property requirements. All work includes system testing and Gas Safe certification.
Boiler repairs
Our 24/7 repair service addresses boiler breakdowns with rapid response times. Gas Safe engineers diagnose faults efficiently, prioritising safety and minimal disruption. We repair all major boiler brands across residential and commercial properties.
Power flushing
This process removes sludge and debris from central heating systems using high-velocity water flow. We employ chemical cleansers to restore efficiency, typically completing flushes within 6-8 hours to prevent future breakdowns.
Commercial heating
We design and maintain heating systems for schools, hospitals, and industrial premises. Services include burner repairs, system balancing, and steel pipework installations, ensuring compliance with commercial safety standards.
Air conditioning
We supply and install Bosch air conditioning units for residential and commercial spaces. Our systems provide heating/cooling, humidity control, and air filtration, with smart controls for energy-efficient temperature management.
Questions
Are your engineers Gas Safe registered?
Yes, all our engineers carry valid Gas Safe registration cards for compliance verification.
Do you offer emergency boiler repairs?
We provide 24/7 emergency repair services with typical same-day engineer dispatch.
Can I finance a new boiler?
Yes, we offer 0% finance options over 2 years and 9.9% APR plans for 3-10 years.
What areas do you cover?
We serve Waterlooville, Portsmouth, Chichester, Fareham, Gosport, and surrounding Hampshire areas.
Are your boiler installations guaranteed?
All Worcester boilers include 8-10 year parts and labour warranties with proper maintenance.
Do you provide maintenance contracts?
Yes, Service+ plans start at £21/month, covering annual services and unlimited breakdown repairs.
Reviews (4)
William Bell
Apr 06, 2021 Report
Positive:Professionalism,Punctuality,Quality,Responsiveness
First class engineers, excellent response from office staff whenever there's a need to speak to anyone. Gary our engineer is very polite helpful and an excellent ambassador for this company. 100% ALL ROUND.
Services:Heating maintenance,Heating system repair
Alison Dixon
Mar 29, 2021 Report
Had a boiler service completed, friendly and approachable customer service, highly competitive pricing, would recommend.
Jackie Harvey
Mar 18, 2021 Report
We found this a really good reliable company ....very friendly and helpful...worked cleanly and neatly whilst moving our boiler would recommend and definitely use again
Shane Green
Mar 18, 2021 Report
Highly recommended. Always friendly, professional and knowledgeable. Can’t fault their work at all! Excellent job as always. Will be using Gas-Fix again.