Why snow-melt makes sense in Utah
A standard residential snow shovel can clear about 600 lbs of snow before most people quit. A typical Park City storm drops 10–15 inches across a 1,500 sq ft driveway — call it 4,500 lbs of snow to move. Once a week. For four to five months.
That's why, in steep mountain driveways and on properties where snow falls faster than you can clear it, snow-melt isn't a luxury — it's the only system that actually keeps things usable through the winter.
The math gets stronger when you consider:
- Ice liability — a single slip-and-fall at the entrance is a five-figure problem.
- Salt damage — Utah's heavy use of road salt over winter destroys concrete in 10–15 years. Snow-melt removes the need for any salt.
- Resale value — Park City and Deer Valley homes with snow-melt sell measurably faster and at a premium over comparable homes without.
- The 6 a.m. problem — if you've ever shoveled the driveway before work, you understand the value of waking up to clear pavement.
How a hydronic snow-melt system works
PEX tubing in the slab
1/2" or 5/8" PEX-A tubing tied to rebar before concrete pour, or laid in bedding under pavers. Spacing typically 6"–9" on center depending on design load.
Glycol mix in the loop
Typically 40–50% propylene glycol mixed with water. Provides freeze protection down to -30°F or lower, even when the system isn't running.
Boiler heats the loop
Either a dedicated snow-melt boiler or a shared boiler with a stainless heat exchanger isolating the glycol loop from the home heating loop. Supply temperatures run 90–140°F depending on slab temperature.
Sensors trigger melt
Pavement sensor measures slab temperature AND detects moisture. Aerial sensor reads air temperature and humidity. Controller fires the system only when actual snow or freezing rain is present — no wasted gas.
Design decisions that matter
BTU per square foot
Snow-melt loads are 5–8x what home radiant heating requires per square foot. Typical Utah design targets:
- Class I (residential, lower priority): 100–125 BTU/sq ft
- Class II (residential, standard): 125–175 BTU/sq ft
- Class III (steep driveways, ADA access, commercial): 175–225 BTU/sq ft
For Park City and Deer Valley, we typically design Class II or III given the snowfall volumes. Generalist installers often undersize at 100 BTU/sq ft, which works fine in Salt Lake Valley but underperforms in real Wasatch winters.
Zone the slab, don't melt the whole thing
You don't need to melt the entire driveway. Zoning into "wheel paths only" or "main driveway plus walkway, skip the apron" cuts both up-front cost and operating cost dramatically. For a 1,500 sq ft driveway, a smart zone design might actively heat only 900 sq ft — keeping cost down without sacrificing usability.
Heat-source sizing — don't undersize
A 1,500 sq ft Class II driveway needs roughly 200,000–260,000 BTU of heat-source output. Most residential boilers are 80,000–140,000 BTU. That math is why most snow-melt systems need a dedicated boiler or a serious boiler upgrade. We don't pretend otherwise.
"We've taken over a lot of failed snow-melt systems. Most failures are sizing — both the BTU output and the slab spacing. Get the design right and the rest follows."
Snow-melt + radiant combo systems
The premium configuration for new construction in Park City, Deer Valley, Promontory, and Heber Valley: a single mod-con boiler running radiant floor heat and snow-melt simultaneously, with a buffer tank smoothing the loads. The radiant side runs at 110°F supply, the snow-melt at 140°F, isolated by a heat exchanger.
Properly designed, this configuration uses less gas annually than running a separate furnace + electric snow-melt + electric water heater. It's the right answer for a luxury mountain home.
Snow-melt cost in Utah
Where we install snow-melt
Snow-melt installs run heavy in the mountain markets. Full list on the service area hub.