Heating and Air Conditioning
Gas Safe and F-Gas registered heating and air conditioning engineers serving London, Kent, Essex, Sussex and the South East. Expert boiler installation, boiler servicing, emergency repairs, air conditioning installation, and renewable heating solutions.
Trusted and certified by leading industry bodies
Our Services
From emergency boiler repairs to new boiler installation and annual servicing, Smart Plus Heating provides comprehensive heating and air conditioning solutions across Dartford, Bexleyheath, Gravesend and Kent. Our Gas Safe registered engineers deliver expert workmanship on every job, backed by industry-leading warranties and 7-day support.
See All Our ServicesWhy Dartford Homeowners Choose Smart Plus Heating
We don't just install boilers — we build lasting relationships. As a British Gas partner with over 9,000 boiler installations across Dartford, Bexleyheath and Kent, we bring national standards with genuine local care.
- No hidden call-out fees or unexpected costs.
- Up to 12-year manufacturer warranties on all boiler installs.
- Fully insured, Gas Safe registered engineers (No. 670242).
- Worcester Bosch & Vaillant accredited installers.
Client Feedback
"I recently had two air conditioning units installed by Smart Plus Heating and I cannot praise the company enough. Joe responded immediately and came to assess the property in person — unlike other companies who wanted me to describe everything online. The team of three worked tirelessly for 12 hours to complete the installation in one day. They left the house spotless. The cost was competitive and I would recommend Smart Plus to anyone looking for air conditioning or heating work in the area."
"We used Smart Plus for air conditioning installation in a garden room/gym and two office units. Communication was excellent, the installation was fast, and the property was left completely tidy. Would highly recommend Joe and the team."
"Smart Plus Heating installed a Panasonic air conditioning unit in our bedroom. Minimum mess, arrived on time, fully professional and respectful of our property. Would have no qualms recommending them to anyone."
"I recently had an air conditioning system installed by Smart Plus Heating and couldn't be more impressed. They began with a thorough on-site assessment — something many companies skip. The engineers were experienced professionals, worked cleanly, and communicated throughout. A top-tier service all around."
"Smart Plus Heating installed four air conditioning units in our house. From the quote to completion they were professional and easy to work with. Tidy, considerate and the quality of the work was exceptional. Could not recommend highly enough."
Frequently Asked Questions
How much does air conditioning installation cost?
Cost depends on the size of the space, the number of rooms, and the system you choose. We offer a free, no-obligation home survey so we can give you an accurate, fixed-price quote tailored to your property.
Do you install air conditioning in both homes and businesses?
Yes, we install residential and commercial air conditioning systems across London, Kent, Essex, Sussex and the South East, from single-room units to full multi-room and commercial setups.
How long does an air conditioning installation take?
Most single-room installations are completed in a single day. Multi-room or commercial systems can take longer depending on the number of units and property access.
Are your engineers qualified to work on gas and air conditioning systems?
Yes, all gas work is carried out directly by our own Gas Safe registered engineers, and all air conditioning work by our own F-Gas qualified team.
Do you offer free quotes?
Yes, every job starts with a free, no-obligation survey and a clear, fixed-price quote before any work begins.
Contact Us
Our team of Gas Safe registered heating engineers covers Dartford, Bexleyheath, Gravesend, Sevenoaks and across Kent. Get in touch for a free quote.
Phone
01322 474 990
Mon–Fri: 8:00 AM – 6:00 PM
info@smartplusheating.com
We reply within 24 hours
Office Address
The Bridge Nucleus
Brunel Way
Dartford, DA1 5GA
Areas We Cover
Dartford · Bexleyheath · Gravesend
Sevenoaks · Swanley · Sidcup
Erith · Crayford · across Kent