Modern, efficient central heating for your home.
Full system upgrades, modern radiators, and smart controls — professionally installed by Gas Safe engineers.
If your radiators take forever to warm up, some rooms never feel quite right, or your energy bills keep climbing — your heating system might be past its best.
We upgrade outdated central heating systems across Derbyshire and Nottinghamshire, replacing old radiators, pipework, and controls with modern, energy-efficient solutions designed for how you live today.
Book a Free SurveyEverything You Need
Efficient, stylish radiators sized correctly for each room. We supply and install a wide range of designs to match your home's décor while maximising heat output.
Wireless thermostats, smart TRVs, and app-controlled heating give you full control over your comfort — and help reduce wasted energy by heating only the rooms you're using.
We replace old, corroded pipework and install thermostatic radiator valves (TRVs) where needed — improving flow, reducing cold spots, and giving you room-by-room temperature control.
We remove sludge, rust, and debris from your system using a professional power flush — restoring efficient water flow and preventing future blockages and cold spots.
If your existing boiler isn't up to the job, we'll recommend the best replacement and include it in your quote. We install all major brands including Baxi, Worcester Bosch, and Vaillant.
We don't just swap parts — we design a system that works for your home. We calculate heat loss, recommend radiator sizes, and plan pipework routes for maximum efficiency.
Every upgrade is tailored to your home. Book a free survey and we'll design the perfect system for you.
Time for a Change?
Not sure whether your heating system needs upgrading? Here are some common signs that it might be time to invest in a modern, more efficient setup.
If any of these sound familiar, a heating upgrade could save you money, improve your comfort, and add value to your home.
Book a Free SurveyWhy Upgrade?
A modern heating system doesn't just keep you warm — it saves you money, gives you more control, and adds value to your home.
Book a Free SurveyReal Case Study
One of our customers had been living with a 15-year-old central heating system that was costing a fortune to run and struggling to heat the whole house evenly. After a full system upgrade — including a new condensing boiler, modern radiators throughout, and smart heating controls — the difference was immediate.
Within six months, their energy bills had dropped by 25%. Every room in the house reached a comfortable temperature, and the smart controls meant they were only heating the rooms they were actually using.
That's the kind of difference a properly designed central heating upgrade makes — not just warmer rooms, but real savings you notice every month.
Get Your Free Survey
We supply and install radiators, controls, and boilers from all major brands. We'll recommend the best options for your home and budget.
How It Works
We visit your home, assess your current heating system, and discuss your needs.
We design a tailored solution and provide a fixed-price quote with no hidden costs.
Our Gas Safe engineers install your new system quickly, cleanly, and with minimal disruption.
Your new heating system is ready to go, backed by our aftercare guarantee.
At KAS Energy, we're committed to delivering reliable, high-quality heating & plumbing services across Derbyshire & Nottinghamshire. Here's why homeowners choose us with confidence:
Quick, dependable service when you need it most—no long waits.
Gas Safe registered professionals with 20+ years hands-on expertise.
Spread the cost with flexible payment plans.
Trusted by 315+ local customers for reliability, professionalism, and results.
WHAT OUR CUSTOMERS SAY
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"The KAS representative physically attended to survey the house and old boiler, checking water flow rate etc before leaving a written quote at the end of the visit. The quote was very competitive compared to another local company and an online franchise. Kim speedily replied to a lot of my queries and provided other quotes on different boilers without pressuring me to make a speedy decision. This particular project required replacing two Combi boilers in the property. In fact the engineer who arrived on time, Alex, was so competent and knowledgeable about the boilers I had chosen that he fitted both boilers on the same day. The work was carried out to a neat high standard. On completion the house was left as clean and tidy as when Alex arrived. Would highly recommend this company."
"YOU WANT A BOILER Fitting KAS are the Number 1. KAS Energy Plumbing and Heating, Alfreton, Derbyshire yesterday installed a new Worcester Bosch wall boiler. They were on time, gave me and my wife full details of what we were looking for and measured up for installation. We were sent a full breakdown of the price and how long it would take. We had got other prices from other companies but they bettered that and gave us an extra 5 years free service cover and an extra 5 years cover on the Worcester Boiler. They turned up on time, carried out all the work leaving no mess. They are fully approved Gas Safe, plumbing and electrical. Brilliant 100%."
"Very professional service from KAS. Competent plumber fitted the boiler in a day and explained how to operate in an understandable language. He was very tidy and the price from KAS was very competitive. I would have no reservations about recommending this company."
"Really happy with the service received from KAS Energy, excellent communication and they were able to book me in quickly. Sam replaced my old boiler and was very efficient and professional. I would recommend KAS Energy to anyone and will be using again in the future."
"Sam was very polite and professional. The work was completed and Kimberley kept us up to date with appointment times, availability and documentation. The price was competitive. Overall we're really happy with the work and will be saving their number for the future."
"I can confirm that they have excellent Knowledge, Attitude & Skills (KAS). I am very happy and relieved to have a Combi boiler installed perfectly with good finish, replacing an old heater boiler and placing it where the old cylinder was."
"I've had a brilliant experience with Kas Energy Plumbing and Heating. My mums boiler had stopped working so I messaged them and I got an immediate response, they came out the same day and got the boiler working again. Work was done at a fair price. So refreshing to find a company that offer this level of customer service."
"We have used KAS Energy Plumbing and Heating on several occasions and have never been let down. They have installed Underfloor Heating, carried out Boiler Repairs and installed replacement radiators. The communication was always good and the end product first class. We wouldn't use anyone else."
"I had a new boiler installed last June by Sam, and I've just recently had the boiler serviced for the 1st time since installation, would recommend, great service provided!"
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Where We Work
Based in Alfreton, we cover a wide area across Derbyshire and Nottinghamshire.
We're local, which means fast response times and quick arrival when you need us. No long waits, no chasing — just reliable service from a team that's right on your doorstep.
Not sure if we cover your area?
Contact us to check!
Book a free home survey and get a no-obligation quote. Call us today.
Get In Touch
Ready to get started? Contact us for a free, no-obligation quote. We're here to help with all your plumbing and heating needs across Derbyshire & Nottinghamshire.
Phone
01773 424563Address
Genesis Centre, Office 15,
King St, Alfreton, DE55 7DQ
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