High Velocity Conditioning System
Did you know you CAN have cooling with hot water heat?

Unico, Inc. is the leader in small duct heating and cooling systems and other high-end HVAC systems. The company manufactures all of its products in its modern125,000 square foot plant in St. Louis MO. The company is well known for extensive use in older, architecturally unique homes and buildings as well as elite, high end custom homes. The company is family-owned and operated and sells in all 50 United States, all provinces of Canada, and in over 28 countries around the world.
- Air is distributed through small 2-inch flexible ducts that fit almost anywhere.
- Aspirating the stagnant room air with small jets of air eliminates drafts and hot/cold spots.
- The ductwork is optimized for low noise – no more popping and banging of the duct.
- Increased moisture removal during cooling. Our coils are designed specifically to remove significantly more humidity for a drier home during cooling.
- Unico heat pump systems are truly warm air systems – no more “cold blow”. A Unico system delivers the air at substantially higher temperatures than a conventional system.
- The Unico system has flexible mini-ducts that weave easily through existing construction.
Family Owned & Operated Since 1944
When you need a company you can trust, you need Bay Furnace.
View up to date SpacePak High Velocity Conditioning System information.
• Priority scheduling when you need it most • Annual system tune-ups to keep your equipment running efficiently • Exclusive member discounts on repairs and services
The Word Around Town Hot Reviews. Cool Service.
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“Great group of guys that have solved my problems so far without trying to cut corners and make an easy buck! Convenient to schedule and arrive on time!”- Ryan A.
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“Bay furnace installed a whole house humidifier in March. The crew was very polite, professional and cleaned up the work area as if they were never there. I definitely would recommend them.”- Diana G.
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“Yesterday we had our furnace replaced. The service people were warm and friendly. They explained everything to us. They explained the thermostat until I understood It. They cleaned up so much that our basement was cleaner than when they arrived. I highly recommend them.”- Nancy B.
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“Highly recommend this company; HONEST, prompt, clean, considerate! Everything you'd wish your other service professionals were. Great job!”- B.J.
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“Love José and Bay Furnace! He always does a great job and is friendly and kind. We always ask for him. Will continue to use them in the future.”- Katie B.
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“Excellent service. Installers were very friendly and knowledgeable. Our new A/C is awesome. Thanks Bay Heating and Cooling.”- Brian S.
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“I'm very happy with the furnace/AC replacement project carried out by Paul, Johnny and Jerry. Top rated! This kind of workmanship is hard to find these days. It comes down to the people who put the system in the house. We pay a little more but we got a team who stayed with Bay furnace for 20+ years, who took pride in their finished product.”- Zhiqiang G.
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“Jose is the absolute best! He is professional, knowledgeable and friendly. Thank you Bay Heating & Air Conditioning and Jose!”- Amanda P.
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“The entire experience with Bay HVAC was great, from the initial phone call to the professional and expert service provided by the technician, Brian. We were so impressed that following the service call we enrolled in Bay's membership program.”- Ed W.
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Carrier Factory Authorized DealerBay Heating & Air Conditioning is proud to be a Carrier Factory Authorized Dealer, a distinction earned by meeting Carrier’s highest standards for technical expertise, customer satisfaction, and ongoing training. This designation ensures your system is installed and serviced to strict manufacturer specifications for long term performance and reliability. -
Carrier President’s AwardThe Carrier President’s Award is one of the highest honors a Carrier dealer can receive. This award recognizes Bay Heating & Air Conditioning for excellence in leadership, customer satisfaction, quality installation, and overall business performance, reflecting their commitment to delivering superior comfort and service to every homeowner.