Do San Mateo Eichlers have radiant heat?

Yes, as original equipment. It is confirmed from Eichler's own San Mateo marketing rather than from general description: the Highlands price brochure lists 'engineered radiant heat' as standard, the architecture brochure lists 'radiant heated floors,' and the X-100 brochure specifies Racon radiant heating. Many houses have since had the original system replaced or supplemented.

Standard equipment, and confirmed from the source

The heat is in the floor.

Every Eichler market says this, and most say it from general description. In San Mateo we can say it from Eichler's own marketing: the Highlands price brochure lists "engineered radiant heat" among the standard features, the architecture brochure lists "radiant heated floors," and the X-100 brochure names the system — Racon.

What it is: Heating tube cast into the concrete slab. The floor is the radiator.
Why he used it: Because the house has almost no wall to put a register in, and no attic or crawlspace to run a duct through.
Named system: Racon, in the X-100
Slab on grade: No basement, no crawlspace — and no front step, which is the fastest way to spot one from the kerb

An Eichler living room with a white-painted brick fireplace, exposed beams in a white tongue-and-groove ceiling, and full-height glass walls on two sides. — Find somewhere to put a duct. The ceiling is structure and decking with nothing above it, two walls are glass to the floor, and the floor itself is a slab poured on the ground. The heat had to go into the slab, because there is nowhere else for it to go. 2055 Ticonderoga Drive · Boyenga Team

Why the system and the architecture are the same decision

You can't duct a glass wall.

The radiant slab is often treated as a quirk of Eichler houses. It is closer to a precondition. Take a house with floor-to-ceiling glass on the garden side, exposed post-and-beam framing with the structure as the finished ceiling, no attic, no crawlspace, and interior partitions that do not reach structural importance — and then try to find somewhere to put a duct and a register.

There isn't one. Casting the heat into the slab is what let the rest of the house stay uninterrupted, and that is why it appears as standard equipment across the whole San Mateo output rather than as an option.

It also does something you notice within about a minute of walking in: it warms the floor, so a house that is mostly glass does not feel like one.

The practical part

What buyers and sellers actually need to settle.

Original steel tube in a seventy-year-old slab has a finite life, and the questions that matter on a specific house are not architectural. They are: what is the system now — original, repaired, re-piped, abandoned in favour of something else? Is there documentation? Has it been pressure tested? Is there any history of a leak, and if so what was done? If the slab was opened, was the finish floor put back properly?

None of that is exotic and all of it is knowable. It is also one of the two or three things most likely to move a price in this market, which is why we would rather have the answer before an offer than after an inspection.

We are real estate agents, not engineers or plumbers. Anything on this page is background, and a specific system should be evaluated by a qualified contractor who works on radiant slabs.

Talk to us

Questions about a specific slab?

We have been through this on a lot of Eichlers. Tell us what the disclosure says — or what it doesn't say — and we will tell you what we would want to know next and who we would have look at it.