HVAC & Retrofit Systems

HVAC & Retrofit Systems

Old House Online’s Directory of HVAC and retrofit systems for classically-designed or older homes. Specialties include retrofitting older systems for energy efficiency; heating & air conditioning repair; ventilation systems.

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The Unico System
HVAC & Retrofit Systems

The Unico System

The Unico System is a high-efficiency cooling and heating system that can be discreetly retrofitted into vintage homes or designed into new construction without the need for extensive remodeling or intrusive ductwork. There’s less mess, less dust, less installation time—and no need to “gut” your home for installation. The Unico System – Comfort Fit for Your Home.

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Mitsubishi Electric
HVAC & Retrofit Systems

Mitsubishi Electric

Whether you have a single uncomfortable room, you’re renovating your entire house, or you’re building a home from scratch, Mitsubishi Electric has a Zoned Comfort Solution® that fits your unique needs.

Product of the Week

HVAC & Retrofit Systems

Hi-Velocity Systems

Energy Efficient Central Heating, Cooling and Indoor Air Quality Systems for over 35 years. The Hi-Velocity Small Duct System fits where others cannot, removing 30% more moisture from the air than conventional systems, and eliminating hot and cold spots in the home or office.
HVAC & Retrofit Systems

Rheem

The only manufacturer of integrated heating, cooling and water heating solutions, including tankless, continuous hot water, an advanced hybrid water heater system, and residential pool and spa products.
HVAC & Retrofit Systems

SpacePak

The total solution for central cooling and heating in ANY home or small business; regardless of structure design, age, size or type of construction.
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