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Custom Heating & Cooling

Residential & Commercial HVAC

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Heating, Ventilation & Air Conditioning

Installation, Service & Repair.

Crawley, Horsham & Surrounding Areas.

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07958 248 040


01403 613 041

Andrew Tyler

All Work Completed by Crawley HVAC Services
Gas Safe 596272
£2 Million Public Liability Insurance
Waste Carrier Licence CBDL375915
Up to Date DBS Check Completed 2021-04-15

Domestic Natural Gas

Servicing, Maintenance & Installation of 

Boilers, (System, Combi & Heat Only Boilers) Cookers, Hobs, Water Heaters, Fires, Warm Air, Pipework, Domestic Swimming Pool Boilers, Homeowner & Landlord Gas Safety Certificates, Heating Controls, Pumps & Zone Valves etc.

Commercial Natural Gas

Servicing & Maintenance of

Plant Rooms, Package Burners, Commercial Gas Boilers, Indirect Fired Air Heaters, Direct Fired Air Heaters, Overhead Tube Heaters, Plaque Heaters, Continuous Flow Instant Water Heaters, Storage Water Heaters, Commercial Pipework, Commercial Swimming Pool Boilers, Strength Testing & Purging, Commercial Gas Safety Certificates.


Servicing & Maintenance of

Mechanical Ventilation Plant - AHU, MAU, FCU, PU, RTU, HRU and Water to Air Units (domestic AQUAIR HIU Warm Air Replacement).

Heat Interface Units (HIU).

Vented & Unvented Domestic Hot Water Storage Cylinders, Commercial Calorifiers, Buffer Tanks, Accumulators & Pressurisation Units.

Air Conditioning 

Servicing & Maintenance of

Mini & Multi Split Air Conditioning Units, Inverters and Heat Pumps.

REFCOM Registered REF1018253

Leak checking, decommissioning, refrigerant recovery, commissioning, refrigerant charging, servicing and maintenance of equipment containing Fluorinated Gases (F-Gas refrigerants).


Servicing & Maintenance of all Heat Pumps.

Experienced with LG, Grant, Dakin, Mitsubishi, Hitachi, Nibe, Vaillant, Viessmann, Samsung, Toshiba, Fujitsu, Panasonic, Bosch, ElectriQ, Daitsu & Media. 

Emergency Plumber

All Plumbing Repairs, From Dripping Taps to Toilet Cisterns, Siphons, Float Ball Valves, Stopcocks, Overflows, Radiators, Showers, Sinks, Basins, Baths, Outside Taps, Cylinders, Immersion Heaters, Tanks, Hot Tubs, Tap Washers and Pipework Leaks.

Water Treatment & Legionella

Risk Assessments, Flushing & Monitoring, Legionella Testing, System Dosing, Disinfection of TMV’s, Chlorination of Calorifiers and Tanks, Hot Tub Service & Safety Checks.


Comfort Controls, Smart Wi-Fi Thermostats, Air Conditioning Control, Gas Boiler, Residential Heating and UFH underfloor heating wiring specialists.

Hello and welcome to Custom Heating & Cooling, my name is Andrew Tyler and I'm a 42-year-old residential and commercial HVAC engineer from Horsham, I have over 25 years of experience, I started in the industry back in 1996. Receiving  full training as a British Gas engineer, I specialise in the maintenance and repair of both domestic & commercial gas appliances and also air conditioning and ventilation. 

I also offer comfort upgrades to heating controls and connected home products, I've had full training to fit various Smart-Home products, including Honeywell Evohome, Hive and Nest smart thermostats.

I also maintain swimming pool boilers, eg Certikin Genie. 

I offer heating water treatment solutions too, from a system water check via a professional laboratory to chemical treatment and magna cleanse power flushing. I also descale and de-sludge blocked combi plate heat exchangers. 

I offer Legionella Risk Assessments, Flushing and Monitoring of Hot and Cold water Systems.

I'm approved with the Vaillant advance installer scheme, which allows me to offer extended warranties on all the replacement boilers that I install.

I'm an expert in boiler maintenance and highly trained to work on Worcester, Vaillant, Glowworm, Ideal, Baxi and Potterton boilers. I'm confident that I’ll be able to fix any boiler or heating breakdown that you might experience. 

I'm very passionate about my industry and am 100% committed to all of my customers, I even offer a free 1 year bronze-1 boiler service plan with all my new boiler replacement installations. I'm at the end of the phone 24/7 for all of my existing customers, you can contact me via phone, text, email, facebook messenger, whatsApp or twitter.

Covering Crawley & Horsham District

Crawley, Horsham, Southwater, Broadbridge Heath, Slinfold, Billingshurst, Steyning, Storrington, Ashington, Rudgwick, Cowfold, Pulborough, Warnham, Henfield, Bramber, Upper Beeding, Partridge Green, Rusper & Faygate.

Working with quality products from quality brands


Gas Safe registered

We are Gas Safe registered (reg #596272), which is a legal requirement for anyone carrying out work with gas such as boiler servicing or gas safety certificates. Our registration covers both domestic and commercial gas works. 

Gas Safe registered

REFCOM registered

Please note that we are registered with REFCOM, which is the UK's leading organisation for F-Gas certification. Please have a look at our REFCOM certificate here.

Based in Horsham

Crawley, Horsham, Southwater, Broadbridge Heath, Slinfold, Billingshurst, Steyning, Storrington, Ashington, Rudgwick, Cowfold, Pulborough, Warnham, Henfield, Upper Beeding, Partridge Green & Faygate.

Specialising in boiler breakdowns & repairs

Also offering boiler, air conditioning and smart thermostat upgrades. No job too big or small.

Honest pricing

I offer honest and transparent pricing so that you know exactly how much a job is going to cost. I don't believe in any nasty hidden extra charges.

Offers & Promotions

Smart WiFi Thermostat Installation Special  Offer £100 with no VAT to pay

Smart WiFi Thermostat Installation Special Offer £100 with no VAT to pay

Offer discount code to be mentioned when booking, SMART-SPECIAL-100

This is a labour only special offer of £100 with no vat to pay, this offer only applies to either a 1 or 2 channel smart wifi thermostat installation, eg Nest, Tado or Hive, to either a combination boiler (Combi), system boiler (System) or heat only boiler (Regular).

Installation is based upon the thermostat being installed on to a stand only, unless battery powered, all hardware (thermostat & stand, we recommend purchasing from a local supplier) is to be supplied by the customer. 

The existing thermostat and programmer will only be removed where possible and deemed necessary and the supply cables will be made safe but only removed where possible, this will be decided by the installer. 

The thermostat receiver will be located where easiest for installation, this will also be decided by the installer. 

This special offer of £100 is for a basic installation only, it includes 1000mm of 5 core flex wire and wire connectors supplied by the installer. 

Your new smart wifi thermostat will be commissioned and the operation of use demonstrated to you. You must have already installed the app and created an account before our arrival, and all hardware must be onsite and complete before our arrival.

Covering Crawley, Horsham, Southwater, Broadbridge Heath, Holbrook, Littlehaven, Needles, New Town, North Heath, Oakhill, Roffey, Tower Hill, Trafalgar.


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Boiler Service Plans from £5

Boiler Service Plans from £5

Service and Maintenance plans available in Horsham, Southwater, Broadbridge Heath and Billingshurst, I offer a range of service and maintenance plans, some that offer a priority 24 hour, 7 days a week ...

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Landlord Gas Certificates £100

Landlord Gas Certificates £100

Ensure that your properties remain compliant and gas safe. Book in a Landlord Gas Safety Certificate with me today, from £100Covering Crawley and Horsham DistrictCovering Crawley, Horsham, Southwater, ...

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Boiler servicing £100

Boiler servicing £100

Book in your annual boiler service for £100, this is a full strip clean service issued with either a landlord or homeowner gas safety certificate, which will be issued by email along with the receipt, ...

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Our Location

Suite 32, Standby Business Centre, Foundry Lane
Horsham, West Sussex RH13 5PX

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