Radiant Hydronic Heating
Radiant floors, panel radiators, manifolds and zoning — engineered with European hydronic discipline.
ABC Service designs, installs, and corrects hydronic systems across the Bay Area — heat-loss modeled, loop-by-loop, with the manifolds, mixing, and controls to make them actually comfortable.
Services We Provide
Radiant Floor Heating Installation
Crawlspace retrofit, aluminum-plate, staple-up, and slab radiant systems — heat-loss modeled and balanced loop-by-loop.
Hydronic Diagnostics & System Repair
European-trained diagnostics for uneven heat, air locks, circulation, zoning, and bad workmanship on inherited systems.
Panel Radiators & Comfort Heating
Low-temperature panel radiators and designer verticals — quiet, clean, room-by-room comfort engineered to actual heat loss.
Pumps & Zoning Manifolds
Stainless manifolds, ECM circulators, mixing assemblies, hydraulic separation, and properly engineered zoning.
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Radiant & Hydronic Engineering
Radiant Floor Heating Installation
ABC Service installs every flavor of hydronic radiant floor — crawlspace retrofits with aluminum heat-transfer plates, staple-up assemblies under existing subfloors, slab-on-grade pours for new construction, and gypcrete or thin-slab overlays for remodels. Each layout is engineered from a room-by-room heat-loss calculation, with loop lengths, tube spacing, and supply temperatures matched to the floor finish and the building envelope.
Most existing Bay Area homes can be radiant-converted from the crawlspace without tearing up a single floorboard. We pull PEX through joist bays, clamp it into extruded aluminum transfer plates, and pack R-19+ insulation underneath so the heat goes up — not into the dirt. New-construction slabs are pre-insulated, pressure-tested before the pour, and photographed for the as-built record. Loops are balanced at the manifold with per-circuit flow meters, not guessed.
Hydronic Diagnostics & System Repair
A large share of the hydronic work we do is fixing other people's installations. Uneven heating, cold zones, air-locked loops, short-cycling boilers, gurgling pipes, runaway return temperatures, oversized circulators fighting undersized piping — these are not equipment failures, they are design and workmanship failures. Our team has seen them all, and we know how to unwind them without ripping the system out.
Diagnostics are systematic: ΔT readings across every zone, loop-by-loop flow verification, manifold balancing checks, air-separator and expansion-tank evaluation, outdoor-reset curve audits, mixing-valve and primary/secondary verification, and control-strategy review against the building's actual load. Our engineers carry deep European hydronic experience — the tradition where radiant and panel-radiator systems have been engineered to a far higher standard for decades — and we apply that discipline to every Bay Area system we touch.
Panel Radiators & Comfort Heating
European-style panel radiators deliver room-by-room comfort that forced-air simply cannot match — silent, dust-free, and tunable to the degree on every wall. ABC Service specifies low-temperature steel panel radiators and designer vertical radiators from Buderus, Runtal, Myson, and Jaga, sized to each room's actual heat loss rather than off a generic chart.
Low supply-water temperatures (35–55 °C) keep panels quiet, pair beautifully with condensing boilers and air-to-water heat pumps, and give every occupant per-room control via thermostatic valves or smart actuators. We route supply and return cleanly — concealed in walls or floors where the architecture allows — and finish every install with crisp escutcheons, level mounting, and air-bled, fully balanced loops. The result feels and looks like a premium European home, not a retrofit.
Manifolds, Pumps & Zoning
The manifold cabinet is the brain of a radiant or panel-radiator system. We build stainless or brass manifolds with per-loop flow meters, electronic actuators, isolation valves, and integrated air vents — laid out so every loop can be read, balanced, and serviced individually. Pumps are sized to the actual head loss of the loops they feed, not bought oversized 'just in case.'
Zoning, mixing, and hydraulic separation are designed together: low-loss headers or closely-spaced tees to decouple boiler and emitter flow, three-way or thermostatic mixing valves to protect floor temperatures, ECM circulators tuned to delta-P or constant-pressure curves, and smart thermostats wired into proper zoning logic — not piggy-backed onto consumer smart-home gadgets. Outdoor reset and weather-compensated control are commissioned on-site so the system runs at the lowest possible water temperature, all season.
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Why this is worth doing right.
European hydronic discipline
Decades of European radiant and panel-radiator experience applied to Bay Area homes — design, install, and corrective work.
Fixes inherited mistakes
Most hydronic complaints aren't equipment failures — they're design and workmanship failures. We unwind them without a tear-out.
Silent, even comfort
No registers, no fan noise, no blown dust. Radiant and panels deliver warmth you feel rather than hear.
Pairs with heat pumps
Low-temperature radiant and panels are the ideal emitter for modern heat pumps and condensing boilers — engineered for the long run.
Manufacturers We Service
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How a radiant hydronic heating project runs.
- 01Evaluate
We assess existing equipment, loads, venting, electrical, and site constraints on-site.
- 02Design
We size and specify equipment to the building — with options and trade-offs explained plainly.
- 03Install
A dedicated lead tech handles a permitted, clean install with finish-grade workmanship.
- 04Commission
We start up, balance, and verify the system against design intent with calibrated instruments.
- 05Support
We walk you through operation, file rebates, and stand behind the system long-term.
Radiant Hydronic Heating: frequently asked
Trusted Across the Bay Area
Homeowners and businesses across the Bay Area trust ABC Service for hydronic heating, HVAC, boilers, heat pumps, and electrical work.
Extremely clean boiler installation and excellent communication throughout. They engineered the system properly instead of just swapping a unit on the wall.
Fast response and genuinely knowledgeable about radiant heating. Heat pump retrofit and panel upgrade done in one project — permits and rebates included.
Professional team, clean work, and honest diagnostics. Upsized our service for the EV charger — on time, on budget, and inspected the same week.
Tankless install with recirculation done right. Coordinated cleanly with our GC and walked us through every decision. Easily the most professional trade we worked with.
Radiant floors throughout a remodel. They designed the manifold layout properly and the comfort is incredible. Quietest system we've ever had.
Furnace replacement plus new ductwork. Quiet, efficient, and the crew treated our house better than we would have. Inspection passed first try.
Honest diagnostics and skilled HVAC technicians. They took the time to walk through the system and explain every recommendation.
Engineered for the Bay Area
From the Peninsula to the South Bay, San Francisco, and the Santa Cruz coast — we design, install, and service premium mechanical and electrical systems across six counties. Our team supports high-efficiency boilers, hydronic heating, HVAC, heat pumps, and electrical upgrades for modern Bay Area homes and light commercial properties.
- Santa Clara County
- San Mateo County
- San Francisco County
- Santa Cruz County
- Contra Costa County
- Alameda County
* Additional service areas available upon request.
