Since 1938 Tjernlund has provided the highest quality engineered and manufactured products that solve exhaust, ventilation and heating/cooling problems. Current products include: indoor air quality products and accessories such as the UnderAire™ Crawl Space Fans, XchangeR™ Reversible Basement Ventilation Fans, Radon VAC™ mitigation products, Duct Booster® fans, Dryer Duct Booster® fans, AireShare™ transfer fans, hearth products, draft inducers and side wall power venters for gas and oil heating systems, In-Forcer™ powered combustion air intakes plus interlock controls & accessories. Over four generations our mission has been to provide quality engineered and manufactured products that solve exhaust, ventilation and heating/cooling problems. Paramount to our success is providing the technical support necessary so that our products are easy to select and install. We are dedicated to serving your special exhaust and ventilation needs.
Masonry Products; Mortar/Grout; Concrete; HVAC - Heating, Ventilating, Air Conditioning; VentilatorsIsokern, by Earthcore, is the market leader and innovator in modular masonry
Duct-Booster® Fans economically boost air flow, increase comfort in hard to heat or cool rooms. Also exhaust unwanted heat, humidity, odors or other air-borne contaminants....
The effective, affordable way to reduce radon by sidewall venting. Eliminates intrusive PVC pipe runs vertically through living areas or ugly PVC on home exterior.
Automatically circulate fresh outdoor air underneath homes & porches. Prevents excessive humidity levels in crawl spaces that leads to mold, mildew, structure decay and insects.
Dryer Duct Booster® Saves significant energy - reduces drying times 60% or more. Reduces lint build-up, dust & fire hazards by maintaining proper exhaust velocity.
Reversible XCHANGER™ Basement Fans improve IAQ, conforms to Ashrae ventilation standards. Unique, energy-saving fan ventilates basements or other areas of stale, musty or smelly air....
Ultra quiet, AireShare™ Room-to-Room & Level-to-Level transfer fans distribute heated/cooled air through interior walls/floors to too hot or cold rooms. Keeps temperature consistent between rooms.
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