SEO for HVAC Contractors · Guide

How to Target Underfloor Heating Installation Searches Through SEO

Two entirely different jobs share this search. A new build or full renovation where it goes into the floor build-up. Then a retrofit into an existing room, where floor height decides everything. The second is where most enquiries come from and where most disappointment happens, because customers do not realise the floor has to come up.

Updated: August 2026
Written by: Andrew Odgers, Managing Director
Reading time: 13 minutes
Open with the split

New Build And Retrofit Are Different Jobs

In a new floor it is straightforward. In an existing room it is a construction project.

Why the search does not distinguish them. The words are identical.

Somebody building and somebody retrofitting type the same thing. One page therefore receives two readers who need almost nothing in common.

What the new build reader wants. Specification.

They are choosing between systems, coordinating with other trades, working to a programme. The difficulty is scheduling rather than feasibility.

What the retrofit reader wants. Whether it is possible.

A different question entirely, one that per block three frequently has an unwelcome answer. They are not comparing systems yet.

Why the split has to be visible. The wrong page loses both.

Content written for one reads as irrelevant to the other. A page averaging the two answers neither well enough to be useful.

Where the enquiries actually come from. The harder one.

Most arrive from retrofit, which is also where the disappointment sits. That mismatch is what this page exists to correct.

The rule that follows. Two situations, separated.

Which usually means two pages rather than two headings on one. A reader who has to work out which half applies to them has already done work the site should have done for them.

The block that earns the page

The Floor Has To Come Up

Retrofit customers frequently do not understand this until a survey. It changes the cost and the disruption entirely.

Why they do not know. Nothing suggests it.

The product is discussed as heating rather than as building work, so a customer pictures something installed. Not something excavated.

What they were imagining instead. An addition.

Something laid over what is there, the way a radiator is fixed to a wall. The gap between that picture and the reality is the whole problem.

What discovering it late actually costs. The relationship.

A customer who has had a survey, formed a plan and then learns the room has to be dug out feels the firm withheld it. Whether anybody intended that is irrelevant.

Why saying it plainly loses enquiries. It should.

Some readers stop there. Every one of them was going to stop anyway. They simply stop before a survey rather than after one.

What it keeps. The ones who proceed.

A customer who read it, absorbed it and enquired anyway has already accepted the disruption. That is a considerably better conversation than one beginning with a correction.

The rule that follows. Say it on the page.

High up, in ordinary words, before anything about systems or costs. A reader who meets it in a paragraph near the bottom has already formed the wrong picture.

What a survey establishes

Floor Height Is The Constraint

Doors, thresholds and stair bottoms all constrain how much build-up is possible. None of it can be assessed from a page.

Why height is the deciding factor. Everything else follows it.

How much depth is available determines which approach is possible, what it costs, whether the job can happen at all. It is the first thing a survey establishes.

The constraint customers never consider. The stair bottom.

Raising a floor changes the first step. Nobody pictures that detail. It can also be the thing that decides the approach.

Why doors are the visible version. They are easy to imagine.

A customer understands that a door may need adjusting. They rarely extend that thought to thresholds between rooms. Nor to where a floor meets something fixed.

What describing this achieves. It qualifies the enquiry.

A reader who understands what is being measured arrives at the survey with realistic expectations. That changes what the visit has to do.

What must never appear. An assessment.

Nothing here tells a reader whether their room has enough depth. No calculator invites them to work it out either. A tool producing a yes or a no has assessed a room nobody visited.

The absolute rule. Never assess a reader's property.

Two different systems

Wet Or Electric

Different costs, different running costs, different applications. Electric suits small areas while wet suits whole houses.

Why customers conflate them. One name.

Both are called underfloor heating, so a reader researching the term collects information about two products. They then form one impression that fits neither.

Where the confusion causes damage. Running cost.

Per block eight, the two behave very differently. An impression formed from the wrong one produces either an unpleasant surprise or an abandoned enquiry.

Why the small area case matters commercially. It is the common enquiry.

A single bathroom or a kitchen is where most retrofit interest starts. It is a different job from heating a house, with a different depth requirement.

Why the whole house case is the larger prize. Per block five.

It connects to the heat source decision, so it arrives alongside a considerably bigger project rather than as a standalone item.

What the page must not do. Choose.

Explaining what each suits is useful. Telling a reader which their situation calls for is a specification decision made without seeing the room.

The absolute rule. Never recommend a system for a reader.

Which includes the implied version. A page describing one type at length and the other in a sentence has made the recommendation without stating it.

The system connection worth leading on

It Pairs With Heat Pumps

Low temperature distribution suits heat pump output, which is why these projects increasingly arrive together.

Why the pairing is technical rather than fashionable. The output matches.

A distribution method working at lower temperatures fits a heat source producing them. That is a property of the equipment rather than a preference of the trade.

What that does to the customer's project. It merges two decisions.

Somebody considering either frequently discovers the other. The two are then taken together, because the floor and the heat source are being addressed at the same moment.

Why an installer doing both has an advantage. One conversation.

A customer coordinating two firms across one floor is managing a programme nobody wanted. One quotation covering both removes that entirely.

Why this belongs on the underfloor page rather than only the heat pump one. Different entry.

Somebody researching a floor for a renovation may not have considered the heat source at all. That makes each page a route into the other.

What must not be implied. A requirement.

Nothing states that one needs the other. Nothing states that a heat pump requires this distribution. Nothing states that this distribution requires a heat pump. That is a design question.

The absolute rule. Never give design guidance.

Rarely covered anywhere

Floor Coverings Matter

Different coverings conduct differently and some are unsuitable. The considerations are genuine and almost nobody explains them.

Why this is the most useful unwritten content here. It arrives too late.

A customer chooses a covering as a decorating decision, frequently before anybody has mentioned heating. They discover the interaction after the choice is made.

Why the order is usually wrong. Different conversations.

The covering is discussed with a flooring supplier and the heating with a contractor. Neither raises the other, because each assumes it is somebody else's subject.

What that produces. An avoidable compromise.

Either a covering that works against the system. Or a system working harder than it needed to. Both settled before anybody who could have advised was involved.

Why publishing it reaches an earlier reader. They are shopping for floors.

Somebody researching a covering is at a stage no heating page normally reaches. Content addressing that question arrives before the decision rather than after it.

What the page must not do. Specify.

Explaining the considerations generally is useful. Telling a reader which covering to choose is a specification decision about a room and a system nobody has seen.

The absolute rule. Never specify a floor covering for a reader.

A range, never a price

Cost And What Drives It

Area, system type, floor construction and whether it is retrofit.

Why the last one dominates. It is a different job.

Per block one, retrofit is a construction project. A range that does not separate the two situations is describing two jobs with one figure. It will be wrong for both.

What floor construction changes. The starting point.

What is already there determines how much has to be removed and what can be built back. That is invisible to a customer and material to the cost.

Why area is the least useful variable. It scales badly.

A customer assumes twice the area costs twice as much. The preparation frequently does not scale that way. That cuts in their favour and is worth explaining.

What the range must exclude. Making good.

Reinstating a floor, adjusting doors and redecorating are real costs a customer will meet. A range that quietly omits them creates the dispute this page exists to avoid.

Why silence costs more than a range. They assume the worst.

A reader given no figure imagines one. The number they imagine is higher than the real one almost every time. That removal happens before any contact.

The absolute rule. Never publish a fixed price.

Controls decide most of it

Running Cost And Controls

Customers assume it is expensive. Controls determine a great deal of what it actually costs.

Where the assumption comes from. The wrong system.

Per block four, the two types behave very differently. An impression formed from one is carried to the other, usually in whichever direction discourages the purchase.

Why controls matter more here than with radiators. The response differs.

A floor does not behave like a radiator when switched on and off. How it is scheduled therefore has more effect on the cost than it would elsewhere.

Why customers get this wrong in practice. They operate it as before.

Somebody using it the way they used their previous heating may see a cost they did not expect. That is a control question rather than a system fault.

What can be said about that. That it matters.

Explaining that controls affect the outcome, plus that a firm sets them up rather than leaving a customer to work it out, is useful without instructing anybody.

Why no figure appears. Per the heat pump material.

It depends on the system, the property, the covering, the controls, the tariff. Those move independently, so any published number will be wrong for most readers.

The absolute rule. Never promise a running cost.

The specification

What The Page Has To Contain

Six things. The second decides whether the rest is trusted.

System types. Per block four.

What each suits, described in terms of the situation rather than the product, with nothing recommended for anybody.

New build and retrofit, clearly separated. Per blocks one and two.

Including that the floor has to come up, said plainly rather than left to a survey. That is where the disappointment currently happens.

What a survey establishes. Per block three.

Height, thresholds, floor construction, what is already there, described so a reader can picture the visit.

Cost ranges. Per block seven.

With the two situations separated, every variable named, making good stated rather than quietly omitted.

Disruption and timescales. The practical answer.

How long a room is unusable, plus what the work involves. That is what a retrofit customer is actually weighing once feasibility is settled.

How to book a survey. The conversion.

Since per block three the height question is what a visit answers. Nothing on the page attempts it.

What appears nowhere. Four things.

No property assessment. No specified floor covering. No promised running cost. No installation guidance.

How the work runs

How We Target It

Four stages. The first splits a page most contractors run as one.

Build separate content for the two situations. Per block one.

Somebody building and somebody retrofitting type the same thing, so one page receives two readers who need almost nothing in common. The new build reader is choosing between systems and coordinating trades. The retrofit reader is asking whether it is possible at all. They are not comparing systems yet.

State the excavation plainly in the retrofit content. Per block two.

The product is discussed as heating rather than as building work, so a customer pictures something laid over what is there. Saying it loses some enquiries. Every one of those was going to stop anyway. They simply stop before a survey rather than after one.

Use the heat pump connection as a second entry point. Per block five.

Somebody researching a floor for a renovation may not have considered the heat source at all. That makes each page a route into the other. A firm doing both is quoting for one project rather than a component, so the customer avoids coordinating two firms across one floor.

Measure surveys booked rather than enquiries. The right metric.

Per block two, a page that produces fewer and better enquiries is working correctly here. The heat source pages are in air source heat pump installer SEO and ground source heat pump SEO, with the alternative technology decision in boiler installation SEO. Our approach is on the SEO for HVAC contractors page and the series in our SEO guides for HVAC contractors.

SEO for HVAC contractors

Two situations.
Separated.

Separate content built for new build and retrofit, the excavation stated plainly rather than left to a survey, the heat source connection used as a second entry point, plus surveys booked measured rather than enquiries.

What is included every month:

Google Maps optimisation Full website management SEO campaign AI optimisation (GEO) Facebook Instagram LinkedIn Quarterly audits Monthly reporting
£350 per month, fixed

One monthly rate covering everything listed above. No setup fee. Nothing billed separately.

The full guide series

Every guide.
One trade.

Heat pumps, certification and accreditation, emergency work, air conditioning installation and repair, boilers, ground source, ventilation, commercial installation, commercial contracts, maintenance agreements and competing with the nationals.

Questions people ask

Underfloor Heating

Why does one page not work here?
Because two entirely different jobs share the search. Somebody building and somebody retrofitting type the same thing. The new build reader is choosing between systems and coordinating trades, where the difficulty is scheduling. The retrofit reader is asking whether it is possible at all. They are not comparing systems yet. A page averaging the two answers neither well enough.
Should we say the floor has to come up?
Yes, plainly and early. The product is discussed as heating rather than as building work, so a customer pictures something laid over what is there. Saying it loses some enquiries. Every one of those was going to stop anyway. They simply stop before a survey rather than after one. The ones who proceed have already accepted the disruption.
What decides whether a retrofit is possible?
Available height. Doors, thresholds and stair bottoms all constrain how much build-up there is room for. The stair bottom is the one nobody pictures, since raising a floor changes the first step. Describe what the survey measures. Never tell a reader whether their room has the depth. Never publish a calculator that lets them conclude it either.
How do we handle wet against electric?
Explain what each suits and recommend neither. Both are called underfloor heating, so a reader collects information about two products and forms one impression fitting neither. The damage shows up on running cost, since the two behave very differently. An impression formed from the wrong one produces either a surprise or an abandoned enquiry.
Why cover floor coverings at all?
Because it is the most useful thing nobody writes. The covering is chosen with a flooring supplier and the heating with a contractor. Neither raises the other. That leaves an avoidable compromise settled before anybody who could have advised was involved. It also reaches a reader at a stage no heating page normally does, since they are shopping for floors.
What should a cost range exclude?
Nothing quietly. Separate retrofit from new build, since they are different jobs. One figure will be wrong for both. Name floor construction, which is invisible to a customer and material to the cost. State making good too, meaning reinstating the floor, adjusting doors and redecorating, since a range omitting those creates the dispute the page exists to avoid.