Heaters · 10 Heating coils warm outdoor air. Aurum Prodest sizes water and electric coils on airflow and heating-water schedule, fits freeze protection and does not let the unit ice on the first January night shift.
Water coils are cheaper to run with a network or boiler, and die without protection: sensor, fan trip, mixing valve, capillary. Electric is simpler hydraulically and heavier on the board and tariff. We price both if heating water is doubtful.
Water coils are cheaper to run with a network or boiler, and die without protection: sensor, fan trip, mixing valve, capillary. Electric is simpler hydraulically and heavier on the board and tariff. We price both if heating water is doubtful.
Duty from outdoor and supply temperatures, not “the section in the neighbour’s AHU”. Weak — winter complaints; oversized electric — tripped breakers. Pipework: strainer, vent, balance.
In the AHU or a duct coil. Insulate after the coil so you do not heat the loft. Commission supply temperature and no freeze at minimum water.
A coil is not a dock air curtain — different jobs. We say so in the brief instead of hanging a section over the door “to be cheaper”.
Service: water wash, element check, sensors. Tie-in to AHU and exchanger pages so the same engineer owns freeze protection.
Coils and heat exchangers: sizing first, brand second. Pros/cons cover durability, hydraulics, and kit completeness.
A brief comparison by class and use case — we match equipment to budget and site
Swipe the table sideways →
| Brand | Class | Pros | Cons |
|---|---|---|---|
| | Premium | One ecosystem with manufacturer systems | Costlier than universal coils |
| | Premium | Premium heat exchange for industrial loops | High price and lead times |
| | Premium | Precise plate HEX selection | Premium budget per unit |
| | Mid-range | Clear ratings and familiar hydraulics | Not always best efficiency/$ |
| | Mid-range | Easy match to same-brand AHUs | Narrower than pure heat specialists |
| | Mid-range | Rotary recovery for efficient AHUs | Niche vs full HVAC brands |
| Winter | freeze protection required |
|---|---|
| Water | cheaper with stable heating water |
| Electric | board and tariff in the calc |
| Duty | from outdoor air and flow |
| Doors | not a curtain substitute |
| Service | wash / elements |
No protection, low water, night pump off. Design and controls, not “a bad section”.
Against ice — yes. Elements have fire rules. We pick per site.
Sometimes if air change is huge. Usually the coil is for outdoor air, not room heating.
If the section allows. Sometimes a new unit is cheaper.
Made-to-order sections — weeks. Stock in the quote.
Recovery cuts coil kW. We size together.
Thermal equipment — 12 cities. Crew dispatch, contract, warranty.
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