Six tracks. One ledger.

Hydronic radiant for the floor; glycol snowmelt for the driveway; mod-con boilers in the basement; baseboards and towel warmers where the architecture asks; legacy rehabilitation on the older stock; commissioning audits on other crews' work.

Each track below opens to a detail page with a typical loop count, a typical sqft band, a typical BTUH load, an ASME boiler class, a price band, and the references we cite when we design and commission it. Banding represents the middle 50% of jobs in the book — outliers in both directions exist and are also welcome.

1. A-01 Radiant floor, slab & staple-up. ~58% · 18k–140k BTUH · 4–24 loops PEX-a tubing in 6″ or 12″ on-center, slab-poured on rigid foam below or stapled to the underside of a subfloor with reflective insulation, manifold-grouped by zone, mixed down with thermostatic three-way valves to suit the floor assembly's heat-output curve. Includes layout, tubing, manifolds, mixing, circulator, sensor pair, and outdoor-reset commissioning.
2. A-02 Glycol snowmelt, driveway & walk. ~21% · 100–200 BTU/sf · 30/70 propylene glycol Heat-trace tubing under concrete, asphalt, or pavers on driveways, ramps, walks, and steps. Mixed glycol loop with its own circulator, separate hydraulic separator, slab and outdoor sensor pair, Tekmar snow-melt control. Sized per ASHRAE Applications Chapter 51 for our wind-corrected design conditions.
3. A-03 Mod-con boilers & venting. ~9% · 80k–399k BTUH · 95%+ AFUE · 5:1+ turndown Sealed-combustion, modulating-condensing residential boilers — typically Lochinvar Knight, Triangle Tube Prestige, Viessmann Vitodens. PVC or polypropylene venting per the manufacturer's instructions; condensate neutralizer kit, sediment trap on the gas line, full commissioning report against the boiler's IO manual.
4. A-04 Towel warmers & low-temp baseboard. ~5% · 8k–22k BTUH per circuit Hydronic towel warmers in primary and guest baths, low-temperature baseboard for guest rooms and stair landings that radiant alone doesn't quite reach, panel radiators (typically Runtal, Buderus, or Myson) where the elevation drawing calls for them. All running off the same mod-con plant, mixed at the manifold to a lower supply temperature.
5. A-05 Legacy system rehabilitation. ~4% · 1920s–1970s housing stock Conversion of single-zone cast-iron radiator systems to modulating-condensing plants with proper outdoor-reset curves; selective replacement of staple-up systems that were sized for the wrong floor assembly; deletion of monoflo tees and air-bound mains; restoration of cast-iron radiators where the homeowner wants them retained.
6. A-06 Commissioning & loop balancing. ~3% · stand-alone audit work We audit and re-balance other crews' radiant systems on a fee-for-service basis: measure manifold supply/return Δt loop by loop, set actuator preset, document the outdoor-reset curve against the actual envelope, install missing sensors, leave a binder. The same commissioning we do on our own installs, applied to systems we didn't put in.