Gasolec S4 Heater 1.75kW with HD Filter

S-series and M-series heaters can be used with liquid propane or natural gas, typically at pressures between 20–310 mbar; note that high-output models like the M8 may require higher pressure (around 4.5 psi / ~310 mbar).

The S-series heater comes standard with a stainless-steel (SS) air filter, but if your set up is dustier, you can opt for a Heavy Duty (HD) filter instead. Cleaning the filter regularly—during the cycle by hand and a deep clean between cycles—helps avoid incomplete combustion and keeps the heater working well. The S4 model features a thermo-electromagnetic flame-failure safety device. To ensure safe and reliable use, it's a good idea to perform regular checks and consult the problem checklist in the S-series manual.

Wondering about installation and mounting height? Typically, the S4 is mounted about 70–90 cm above the floor, but you can adjust this to achieve your desired floor temperature and comfort. Always follow the S4/S-series manual for installation, ventilation, and safe commissioning. Remember, gas heaters need to be installed by a qualified gas installer, with proper ventilation and leak checks done before you start using it.

Coverage varies widely with house insulation, ventilation, floor type and ambient temperature. Anywhere from 400 pheasant/hen chicks to 500 chicks, and up to 800 to 1,200 day‑old chicks for well‑insulated, favourable conditions. Treat these as indicative ranges, not guarantees.
Gasolec’s own guidance stresses that coverage is condition‑dependent; it’s best to size by temperature on the floor and add units as required.

The S4 is supplied for propane at 50–150 mbar. See 750150.

The S4 is a ceramic infrared brooder with a power rating of 1.75 kW (5,118 BTU/hr), and it can operate on either propane (LPG) or natural gas. When using propane, it usually consumes 126g/h. For natural gas, the flow rates vary between 0.158m³/h (high) and 0.189m³/h (low), depending on the jetting or version.