Replaced worn valve and restored hot water
"Very professional and friendly and explained the issue after quickly identifying and sorted the problem."
Tim JME1306 February 2026
South East Boiler & Heating Specialists
Boiler Care That Works Hard For Your Home
Family-run heating engineers with over 20 years’ experience. We keep your boiler running safely, efficiently and reliably all year round.
Gas Safe Registered
20+ Years’ Experience
Family-Run Business
South East Coverage
Gas Safe
Registered
Registered
Seasonal campaign
SUMMER IS HERE — BUT IT WON'T BE FOR LONG
Your boiler may be quiet now, but winter has a habit of exposing problems at the worst possible time. A professional boiler service can help identify small issues, improve reliability and give you peace of mind before the colder weather returns.
- Spot small issues early
- Reduce the risk of winter breakdowns
- Keep the boiler safe and efficient
- Avoid the busiest winter period
- Prepare the home before temperatures drop
Don't wait until your home is cold.
Get your boiler winter-ready today.
Our Services
Heating & Plumbing Done Properly
Boiler Servicing
Annual servicing keeps your boiler safe, efficient and helps prevent breakdowns.
Find out moreBoiler Repairs
Fast fault finding and reliable repairs to get your heating and hot water working again.
Find out moreBoiler Installations
Professional boiler installations with expert advice and tailored solutions.
Find out morePower Flushing
Improve efficiency and restore performance with a full system power flush.
Find out moreWater Treatment
Protect your system from limescale and corrosion for long-term reliability.
Find out moreLandlord Services
Gas safety checks, servicing and repairs with full compliance and reporting.
Find out moreWhy Choose Assiduous Heating?
A Local Team You Can Rely On
Gas Safe Registered Engineers
Family-Run Business
Over 20 Years’ Experience
Transparent Pricing
South East Coverage
Reliable Aftercare & Support
Meet Andy the Ant
Keeping The Colony Warm
Like a colony of ants, we work hard, work together, and never leave a job half-done. Andy is the heart of our brand — a reminder that good heating takes graft, attention to detail, and a team that genuinely cares about every home we look after.
— Service Plans
Heating Protection That Works Around You
Our service plans give you complete peace of mind. Spread the cost and enjoy priority service when you need it most.
- Annual boiler service included
- Parts & labour cover (depending on plan)
- Priority call-outs
- Peace of mind all year round
Plans from
£5.99/mo
Landlord Services
Reliable Heating Support For Landlords & Agents
A complete heating service for landlords, property managers and letting agents.
- Gas Safety Certificates
- Boiler Servicing & Repairs
- Service Plans & Priority Support
- Tenant-Friendly Appointments
Recent Reviews
Rated 5 Stars By Our Customers
Polite, reliable, hard working, clean & tidy
"We had a serious leak from the hot water cylinder in our bedroom — water coming down the living room walls and soaking the carpet on Saturday 27 December. You can only imagine our panic thinking we wouldn't get anyone until well into the new year. A brilliant local plumber came round within 30 minutes of my call at around 6:30pm and managed to isolate the cylinder, stopping the leak. He recommended Perry and unbelievably, he was with us on a Sunday evening between Christmas and New Year sorting it. Can't recommend this guy enough — he is everything everyone else says about him and much more."
Verified customerTN2730 December 2025
Assiduous Heating should be your first call
"Can not praise or recommend Perry enough — he is 100% the man we will call for any future heating related needs. He was punctual, tidy, considerate of our property and belongings and explained everything so we understood the work to be undertaken. The price detailed at the quote stage was the price we paid, and there were no hidden or extra costs. If you have any heating problems, I highly recommend this company."
Verified customerME517 December 2025
Need a Boiler Service, Repair or Quote?
Our team is ready to help. Get in touch today.