It’s time to leave gas behind

Introducing Rendesco Flow: Your complete home energy solution

Heat. Save. Relax. From planning and installation to smart energy management, Rendesco Flow takes care of everything – heat pump, battery storage and intelligent control – delivering year-round warmth, lower bills, and cleaner energy in one streamlined service.

Are you affected by: 

• Bills keep climbing. Gas prices spike, but they never really fall. Every year, you pay more for the same heat.
• Gas is a gamble. Sticking with gas ties you to imports and global shocks you can’t control.
• Old tech, old problems. Boilers waste energy, break down, and keep costing you money.

And would like:

• Warm home, happy planet. Heat your home in comfort while cutting your carbon footprint.

Then the next-generation, cylinder-free heat pump solution designed to replace your gas or oil boiler quickly, affordably, and with minimal disruption, is what you need!

If you're looking to upgrade your home's heating without the complexity of traditional heat pump installations, Rendesco Flow offers a simpler, smarter alternative.

Why Choose Rendesco Flow?

Installed in Just One Day

Their innovative heating interface unit (HIU) allows them to replace your existing boiler in a single day - compared to traditional cylinder-based systems that can take up to a week.

Lower Upfront Investment

By removing the need for a hot water cylinder and simplifying installation, The flow significantly reduces installation time, disruption, and cost.

Direct Boiler Replacement

Rendesco Flow is specifically designed to replace gas and oil boilers without requiring major changes to your home.

Eligible for £7,500 Government Grant

Homeowners may qualify for the Boiler Upgrade Scheme grant, reducing installation costs by up to £7,5000.

Reduce Energy Bills

Integrated battery and smart controller system optimises the energy use - charging during cheaper off-peak periods and supplying power when rates are highest.

Designed for Long-Term Performance

Heat pumps typically have a longer operational lifespan compared to conventional gas boilers, offering better long-term value.

A Smarter, Cylinder-Free Heating Solution

The Innovation: The Heating Interface Unit (HIU)

Traditional heat pump systems often require a large hot water cylinder, taking up valuable space and increasing installation time.

Rendesco Flow uses a compact, purpose-designed heating interface unit that:

• Eliminates the need for hot water cylinder
• Fits neatly into your existing boiler location
• Reduces installation time from around one week to just one day
• Minimises disruption in your home
• Makes heat pump technology accessible to more properties

The result? A cleaner, faster, and more affordable upgrade.

How it Works

1. Free Home Survey

They assess your property, heating system, insulation levels, and electrical setup to ensure Rendesco Flow is the right fit.

2. System Design & Grant Application

Designing a tailored solution and guiding you through the £7,500 grant process where applicable.

3. One-day Installation

The oil boiler is removed and replaced with the Rendesco Flow cylinder-free heat pump system.

4. Battery & Smart Control Integration

A battery system and intelligent controller optimise your energy usage by:

• Charging when electricity is cheapest
• Supplying energy during peak tariff periods
• Reducing reliance on grid electricity at high rates

5. Ongoing Support

Provide an industry leading 8-year extended warranty and maintenance package for complete peace of mind.

Why Book a Survey?

Every home is different - and heat pump performance depends on proper system design.

A professional survey allows Rendesco to:

• Confirm suitability for Rendesco Flow
• Accurately size the system for maximum efficiency
• Assess radiator compatibility
• Review electrical capacity for battery integration
• Calculate projected savings
• Confirm grant eligibility
• Provide a clear, fixed quotation

There's no obligation - just expert advice tailored to your property.

Click Here to Complete the form to book your survey and receive your personalised heating plan.

Benefits at a Glance

• Take control of rising energy bills. No more guesswork or stress - Flow gives you predictable, smarter energy use, even when prices spike.
• Reduce energy costs. Thanks to automated off-peak charging and smart energy shifting, your system saves you money - year after year.
• Reliable warmth, around the clock. Enjoy quiet, consistent heating and hot water all year round.
• A greener, cleaner home. Flow is your move toward net-zero. Heat pumps are up to 3 - 4x more efficient than traditional systems, slashing CO2 emissions while raising comfort
• Full 24/7 support and peace of mind. With RendescoCare, we monitor and optimise performance continuously - so you can relax.
• Installed in just one day. Experience fast, cylinder-free heat pump installation - no bulky tanks or disruptive weeks of re-plumbing. Most homes are up and running in just one day.

Frequently Asked Question (FAQs)