For years High Temperature Heating and Ventilation (HTHV), a direct-fired 100% outside air technology, and 80/20 direct-fired units have been heating solutions used for new construction and retrofit projects throughout the US with little attention to the differences in Indoor Air Quality (IAQ) from both products. However, when it comes to IAQ there are significant differences between these two technologies. HTHV introduces 100% outside air without recirculating building air through the heater, which can provide important IAQ benefits when properly applied.

Learn how commercial heating systems help factories and commercial buildings maintain productivity, protect equipment, improve indoor air quality, and prevent costly disruptions.

Explore tax incentives, rebates, and deductions for energy-efficient HVAC systems in new construction and retrofit projects. Learn how contractors and building owners can lower building costs while meeting heating, cooling, and ventilation needs.

Discover how efficient heating and cooling, smart controls, and maintenance can cut warehouse energy costs, improve comfort, and support sustainability.

Explore how innovative HVAC technologies provide energy-efficient, eco-friendly heating and cooling solutions for commercial buildings, benefiting both mechanical contractors and building owners.

Discover how Cambridge Air Solutions is revolutionizing car wash heating with stainless steel HVAC systems designed to withstand high humidity, harsh chemicals, and extreme temperature fluctuations. Learn more about our latest advancements from AHR 2025.