
Hot Water Tank Installation
Professional hot water tank installation and replacement across Devon and Somerset. Expert advice on all system types.
Choose the Right Hot Water Tank for Your Home
Different hot water systems suit different homes and requirements. Our qualified engineers will help you choose the perfect system for your property.
From £1,200
High-pressure hot water systems providing mains pressure hot water throughout your home.
Key Features:
- Mains pressure hot water
- No cold water tank needed
- Better shower performance
- Space-saving design
- Suitable for modern homes
Best for:
Modern homes with good mains water pressure
From £800
Traditional gravity-fed systems working with a cold water tank in the loft.
Key Features:
- Gravity-fed system
- Works with existing pipework
- Lower pressure hot water
- Requires cold water tank
- Suitable for older properties
Best for:
Older properties with existing tank systems
From £1,500
Advanced systems that store heat energy and provide both heating and hot water.
Key Features:
- Heat storage technology
- Compatible with renewable systems
- High efficiency operation
- Future-proof design
- Suitable for eco-homes
Best for:
Homes with renewable heating systems
Getting Your Hot Water Tank Size Right
Proper tank sizing ensures you have enough hot water for your household needs without wasting energy. Our engineers calculate the exact size needed based on your usage patterns.
How It Works
Household Assessment
We evaluate your household size, number of bathrooms, and typical hot water usage patterns to determine your daily requirements.
Peak Demand Calculation
We calculate your peak hot water demand, considering simultaneous usage of showers, baths, and appliances.
System Compatibility
We ensure the tank size works with your existing heating system and pipework for optimal performance.
Future Considerations
We factor in any planned home improvements or family changes that might affect your hot water needs.

Hot Water System Comparison
Understanding the differences between hot water systems helps you choose the most suitable option for your home and lifestyle.
Consideration | Vented Cylinders | Unvented Cylinders | Thermal Stores |
---|---|---|---|
Installation Cost | £800-£1,200 | £1,200-£2,000 | £1,500-£2,500 |
Water Pressure | Low pressure | Mains pressure | Variable pressure |
Space Requirements | Cylinder + tank | Cylinder only | Cylinder only |
Maintenance | Low maintenance | Annual service | Annual service |
Energy Efficiency | Standard | High efficiency | Very high efficiency |
What's Needed for Your Hot Water Tank Installation
Most hot water tank installations are straightforward, but certain factors can affect the process. We'll assess your property and explain any requirements.
- Suitable location for cylinder
- Adequate space for installation
- Compatible heating system
- Water supply connection
- Electrical supply for controls
- Inadequate space for cylinder
- Poor water pressure for unvented
- Incompatible heating system
- Structural modifications needed
- Planning permission required
Don't worry if you have complications - we'll work with you to find solutions and can coordinate any additional work needed.
Benefits of Professional Hot Water Tank Installation
Professional installation ensures your hot water system operates efficiently and safely while providing long-term reliability and peace of mind.
Your Hot Water Tank Installation Timeline
We make hot water tank installation as smooth as possible with clear timelines and minimal disruption to your daily routine.
Free Site Survey
Our qualified engineer visits your property to assess your requirements and provide detailed quotation
Installation Planning
Finalise system selection, schedule installation, and order materials
Tank Installation
Professional installation by qualified engineers with full system testing
Testing & Commissioning
Full system testing, safety checks, and customer handover
Certification & Warranty
Building regulations compliance certificate and warranty registration
Free Site Survey
Our qualified engineer visits your property to assess your requirements and provide detailed quotation
Installation Planning
Finalise system selection, schedule installation, and order materials
Tank Installation
Professional installation by qualified engineers with full system testing
Testing & Commissioning
Full system testing, safety checks, and customer handover
Certification & Warranty
Building regulations compliance certificate and warranty registration
What Our Customers Say
Real experiences from satisfied hot water tank installation customers
"Ben has sorted out the mcs paperwork for us a couple of times now and has allowed us to flawlessly transition from our own bespoke plans to installation. On average we are achieving 1kw-7kw COP"
Devon Ash
Local Guide
Excellent MCS Paperwork Support
"Reformenergy provided an amazing and professional service from start to finish. For us they removed our old night storage heaters and installed a complete new air source heat pump system."
Robin Toy
Local Guide
Professional Air Source Heat Pump Installation
"Highly recommend Ben, and the team at ReformEnergy. Extremely knowledgeable and helpful."
Rob Duncan
Highly Knowledgeable Team
"A swift, professional and successful install of our ASHP – one of the very best experiences in our journey of renovation and house improvement. It started with a swift pick-up of my web enquiry, a clear and comprehensive survey and quote."
Kingfisher Yachting Stephen West
Swift and Professional ASHP Install
"Ben helped me install a Heatpump in a local project of mine, he's so knowledgeable and made the whole process very simple with sound and comprehensive advice."
Matt Jenkins
Knowledgeable Heat Pump Expert
"All round reform provided a 5 star experience from initial enquiry to installation and even took extra time to explain how best to use my new heat pump. Will be using them again to look after my system."
Daniel Cotter
5 Star Experience Throughout
"Quick, efficient, and high quality install of a Vaillant heat pump from the team at Reformenergy. Took the time to design the system in the most efficient way which meant returning to balance and commission the system properly rather than rushing."
Jim Davis
Quality Vaillant Heat Pump Install
"Fantastic service. Helpful and trustworthy. New boiler was perfect and at a decent price. Positive experience overall."
Leah Cottrell
Local Guide
Perfect New Boiler Installation
"Because they weren't condescending, answered all my naive questions. Took time to explain and turned up on time, cleaned up afterwards. They never moaned once about my choice words."
katie allan
Patient and Professional Service
"I Would highly recommend this company! We had a brand new boiler fitted along with new radiator. Fantastic service."
Carl Tregale
Brand New Boiler and Radiator
"Professional presence online and in person. Prompt process from previsit, to quote, to coming to complete the work. Competitive pricing."
Sarah Dienes
Local Guide
Professional and Competitive
Available in These Areas
Find detailed information about our services in your local area
Frequently Asked Questions
Common questions about hot water tank installation and replacement
Hot water tank installation costs typically range from £800-£2,500 depending on the system type, size, and installation complexity. Vented cylinders start from £800, unvented cylinders from £1,200, and thermal stores from £1,500. We provide detailed quotes after assessing your specific requirements.
Most hot water tank installations are completed within 1 day. The process includes removing your old tank, installing the new one, connecting to your heating system, and testing. We'll give you a precise timeline during your survey.
Vented cylinders work with a cold water tank in the loft and provide lower pressure hot water. Unvented cylinders connect directly to the mains and provide mains pressure hot water throughout your home. We'll recommend the best option based on your water pressure and requirements.
Most hot water tank installations don't require planning permission as they're internal works. However, if you're installing an unvented cylinder, it must be installed by a G3 qualified engineer and comply with building regulations. We handle all necessary certifications.
Annual servicing is recommended to maintain efficiency and safety. This includes checking the immersion heater, pressure relief valve, and overall system performance. We offer comprehensive maintenance packages.
We offer up to 10-year warranties on new hot water tanks, depending on the manufacturer and model. This includes parts and labour coverage. We also provide ongoing support throughout the warranty period.
Yes, most properties can be upgraded from vented to unvented systems. We'll assess your water pressure and existing pipework during the survey to ensure compatibility. The upgrade typically improves water pressure throughout your home.
Modern hot water tanks are highly insulated and energy efficient. They typically have 50-80mm of insulation compared to older tanks with minimal insulation. This can save £50-£100 annually on heating bills.
Still have questions?
Ready for a New Hot Water Tank?
Get a free quote for your hot water tank installation or replacement