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AC disconnect requirements in 2026 require the disconnect to be within sight of the unit, properly rated for MCA and MOCP, weatherproof, lockable, accessible, and compliant with local code. HVAC contractors must follow NEC guidelines to pass inspection and ensure safe, professional installations.

New to HVAC or the trades? Learn how to measure floor registers the right way with this simple guide. Avoid costly mistakes, get pro measuring tips, and understand the difference between faceplate, duct opening, and damper.

Discover the key differences between Breeze33 Bypass and Fan-Powered Humidifiers to find the best fit for your home. Learn when each type performs best, how to choose between manual or automatic control, and which model matches your HVAC system for ideal comfort and humidity control.

Plastic PEX fittings are fast and efficient, but small install mistakes can lead to big failures. Learn how to avoid five common errors and keep your systems leak-free.

Cooling season moves fast — and the contractors and facility managers who stay ahead of it know their equipment. Get up to speed on PTACs, wall units, window units, and what to stock before the rush hits.