An HVAC system in a commercial building typically accounts for 17‑49%1 of the building’s total energy use. HVAC Optimization programs are designed to increase the energy efficiency of specific areas of the HVAC system, lowering energy use and energy costs. It’s a rare opportunity to lower overhead operating costs while increasing HVAC system reliability and making the building more comfortable. The first step to unlocking the benefits of HVAC energy efficiency is to think of HVAC as a “system.” An HVAC system is everything that conditions and moves air to and from the indoor space: the rooftop unit, ductwork, vents, thermostats, CO2 sensors, and more. It sounds complicated, but you can think of an HVAC system as a combination of two distinct, primary sections: the HVAC unit, which conditions air and controls air intake, and the HVAC ductwork, which delivers the air to the spaces inside. In order to have an HVAC system that is running as efficiently as possible all components of the unit and ductwork need to work together like a well-coached team.

HVAC Optimization is a uniquely holistic and technically comprehensive set of energy efficiency programs for commercial HVAC systems. outside ac unit cycles on and offEach program is designed to bring a new level of performance and energy efficiency of specific components of your HVAC unit and ductwork. window air conditioning units with heatPlus, each program offers additional optional opportunities to further increase energy efficiency by leveraging advanced HVAC technology.much does hvac service cost HVAC Optimization programs are built upon proven principles of building science. Each program is effective individually, but when combined, they can give you an HVAC system that is completely optimized for performance and energy efficiency.

Hot Dawg® Power Vented (HD) Modine's Hot Dawg is widely recognized as the industry's most popular residentially-certified gas-fired unit heater, with six sizes available from 30,000 - 125,000 BTUs. It is an ideal solution for residential garages and workshops, along with light commercial or industrial applications.To commemorate Modine's 100th anniversary, the Special Edition black unit is now available, along with three appearance kits. These kits fit any new or existing Hot Dawg unit from 30,000 - 75,000 BTUs. Choose from:Huntin' Dawg - perfect for sportsmen & huntersDiamond Dawg - a great compliment to any car or motorcycle enthusiasts garageCarbon Fiber - spruce up your standard Hot Dawg with this exciting option Use your workspace - comfortably - year-roundOnly Modine offers numerous colors and appearance kits, letting you heat your space in styleFree up more workspace by getting rid of space heaters that clutter up the areaQuieter garage with the Hot Dawg thanks to noise levels less than other units (see brochure for specs)Units work with propane or natural gas and conversion kits are available too in case you change heating sourcesTrouble-free motor dependabilitySimplified side-wall or roof venting with small-diameter vent pipes

Hush-puppy quiet operation Right or left hand controls available on 30-75 units by rotating unit 180 degrees10 year warranty on heat exchangerLightweight, easy installation 1" from ceilingOperates with natural or propane gasPower vented model simplifies side-wall or roof venting with small-diameter vent pipeFinger-proof fan guards on all unitsPermanently lubricated motorControls can be either single or two-stage, direct spark ignition, 100% shut-off with continuous retryCertified for residential, commercial and industrial useMade in the USAComes in standard grey/green or optional black Special EditionThree appearance kits available - Huntin' Dawg, Diamond Dawg, Carbon FiberOther models available include blower model (HDB), separated combustion (HDS) and separated combustion with blower (HSB)The main advantages of a ductless mini-split HVAC system are its small size, quiet operation, and the flexibility it has for heating and cooling individual areas within your home. It’s a good choice if:You have an older house that lacks ductwork.

You’re building an addition that will be difficult to tie into your central air-conditioning system.You want to supplement your existing heating and cooling without resizing your existing HVAC system.What does mini-split mean?There are two main components: an outdoor condensing unit (smaller than standard air-source heat pumps and easy to conceal behind landscaping), and the indoor evaporator (fan coil) unit. These are connected by copper tubing and require electricity.Installation is less invasive than retrofitting with conventional ductwork, requiring only a 3-inch diameter hole in the outside wall. A professional heating and cooling specialist can set up a ductless mini-split system in a few hours.How much heating and cooling capacity?According to the nonprofit Northwest Energy Efficiency Alliance, one indoor unit can provide between ¾ and 2½ tons of heating and cooling, depending on its BTU capacity rating. Outdoor units are sized to meet the combined load of all heating/cooling zones.

One outdoor unit can connect up to four indoor air-handling units to heat or cool several rooms or zones.Expect to pay between $1,500 and $6,000 per heating/cooling zone, which is about 30% more than conventional central HVAC systems, excluding ductwork.DisadvantagesDespite their lightweight, streamlined design, the indoor evaporators can be aesthetically challenging. They come only in standard beige, are nearly as large as a flat-screen television, and cannot be painted. They typically are placed on a wall or ceiling, meaning they’re not easy to conceal.Individual zoning saves energyBecause mini splits deliver all their conditioned air directly to individual rooms, there’s no chance for air to leak out through long stretches of ductwork. That lets mini splits use 25% to 50% less energy that electric resistance and forced air systems.You’ll save even more energy with programmable thermostats for each air handler. Some ductless split-system air conditioners and heat pumps are Energy Star-rated and qualify for state tax incentives and local utility rebates.