Not only is duct sealing helpful, in situations of major duct leakage it’s a necessity. Going without it means paying more to heat and cool your house, creating extra strain on the HVAC system, a shorter life for the heater and AC, unhealthy and poor-smelling air in the house, and other problems.
We know why people wonder about the usefulness of duct sealing. It’s because ducts are hard to see. This makes it difficult to visualize the ducts needing to have any repairs in the first place. When you see damage to a wall or dying grass on the lawn, it’s a signal to do something about it. The only warning signs you’ll have that your ducts are in trouble are second-hand issues that might be from other troubles. These include higher energy bills and hot/cold spots around the house.
Furnace manufacturers design their heating products for durability and dependability. But at the same time, furnaces are complex devices and they can suffer from a range of malfunctions during their service lives. These troubles can be kept to a minimum through regular heating maintenance, but nothing can prevent all possible problems. And no problem with a natural gas furnace is more concerning, and more in need of a speedy response, than a cracked heat exchanger.
The air filter on the HVAC cabinet of your home has a vital job to do—and it isn’t connected to the quality of the air circulating through the house. People often have this misunderstanding: they hear the word filter an imagine the mesh of the filter trapping unhealthy particles in it. You can have HVAC technicians install special indoor air quality filters into the ductwork to remove contaminants from the house—but the one already in place isn’t doing that job.
December is Winter. The actual season doesn’t officially start until the solstice on 20–21, but winter weather doesn’t run on a strict calendar anyway.
You’re concerned about the indoor air quality in your house, and that’s a good place to start. IAQ in homes is often remarkably poor, four or five times worse than that outdoors. But if you have air filters to improve the air quality, why aren’t you noticing any positive results? If you’re still experiencing the same dusty air, the same number of allergens, the same coughing fits, etc., then something must be wrong—but what?
As we prepare our homes for winter, it’s important to assess our heating systems. The best way to do this is to schedule routine maintenance 
The weather is cooling down at the end of October—we’re finally in the full fall weather. That means furnaces are going to start coming on for the first time since early spring.
October is the first full month of fall and the point when we start to experience cooler weather as a prelude to the winter. It’s also the time when we recommend our 
When it comes to providing heating and air conditioning to commercial spaces, the most popular option is the packaged rooftop unit. You’re familiar with these—you see them on top of most commercial buildings, and they’re popular locations for chases and shootouts in movies. But rooftop units are common for a reason, and it’s not just to give movie heroes a place to run for cover during an action scene. 
Buying used, or “previously owned,” makes sense in many avenues of daily life. For example, purchasing used books is a great investment. Used furniture is often a terrific bargain, and a smartly bought used car bought can provide many years of service.
