Heating System Upgrades — UK-Wide, Qualified & Priced Up Front
Zoning, pumps, cylinders & system improvements — handled UK-wide by qualified, insured local engineers, with the price agreed before work starts and honest advice on what your system actually needs.
Upgrading what you have
Between 'repair the fault' and 'replace the system' sits a productive middle: targeted upgrades that make an existing system work meaningfully better. The high-value list — zoning so upstairs and downstairs heat independently; a modern high-efficiency circulating pump in place of a fixed-speed veteran; hot water cylinder replacement, including the jump from vented tanks to a mains-pressure unvented cylinder; controls brought up to current standards; and the clean-protect-filter sequence for systems running on dirty water. Each is quoted on its own merits after a survey, because the right upgrades depend entirely on what's already there.
Sequencing advice comes free with the survey: some upgrades belong together (a cylinder change is the natural moment to zone; a pump change pairs with balancing), some belong before others (never controls before the system water is sorted — smart scheduling of a sludged system just schedules the problem), and some belong in the future file (if the boiler is two winters from replacement, certain upgrades should wait and be specified with it). The goal is a system improved in the right order, not a drawer of receipts.
The unvented cylinder question
The single most transformative upgrade for many older systems is swapping a vented cylinder and loft tanks for a mains-pressure unvented cylinder: showers stop being negotiations, the loft empties of tanks, and hot water performance jumps a class. It's regulated work — unvented cylinders must be installed by G3-qualified engineers, and ours are — and it needs decent mains flow to justify itself, which the survey measures rather than assumes. Costs typically run £1,200–£2,500 installed depending on cylinder size and pipework changes.
Where mains flow can't support unvented pressure, honest alternatives exist: keeping vented with a shower pump, or reworking the hot water approach at the next boiler change. Cylinder decisions also interact with future plans — heat pump ambitions want heat-pump-compatible cylinders with larger coils, worth specifying now if that direction is live. Ten minutes on where the home is heading saves buying the same cylinder twice.
| Item | Guide |
|---|---|
| Typical price band | £250–£3,000 |
| Pricing basis | surveyed quotes; component upgrades fixed-priced individually |
| Typical timescale | 1–2 hours |
| Funnel | Fixed quote after survey |
| Credentials | Qualified heating engineer |
Frequently asked questions
What's the best-value heating upgrade?
For most homes: controls to current standard if they're old, the clean-inhibit-filter sequence if the water's dirty, and zoning if the house is larger. The survey ranks them for your system honestly — value order varies house to house.
Is an unvented cylinder worth it?
If your mains flow supports it, it's transformative — mains-pressure hot water at every tap and the loft tanks gone. It legally requires G3-qualified installation, which our network provides. If your mains can't feed it, we'll tell you and offer the alternatives.
Can you zone my existing system?
Usually yes — motorised valves, a second thermostat and controller changes convert a single-zone house to independent upstairs/downstairs control. It's most economical when done alongside cylinder or boiler work, and we'll say if waiting for that moment is the better move.
My heating works — why upgrade at all?
Working and working well are different bills: fixed-speed pumps, absent zoning, dated controls and dirty water all cost money invisibly every winter. Upgrades are optional by definition — the survey just prices what each would save so the decision is yours with numbers attached.