"We had Environment Masters install a new central A/C and heat system as ours was worn out. From sales to installation, I was totally pleased. The salesperson knew all the factors to take into account to "right size" the system to our house based on house size, orientation to the sun, windows, etc. They provided 3 different quotes based on different system efficiencies and left them with us to decide. Once we made our choice, they were back 2 days later with the entire system. This is when I became totally impressed. During installation, a number of issues were found with my ductwork. Many areas where I had leaks were found. The worst was on the intake to the entire unit (plenum). There was a 1" wide and 3 ft long gap in the plenum that was allowing super hot and humid air to get sucked into the system - only cool air from inside the house is supposed to enter here. This was from the previous installation of my old system. This meant my A/C unit had been working to cool super hot attic air that should have never entered the unit - drastically reducing any efficiency. I hate to think about how much extra that gap cost me over the years! They also discovered leaks in the supply ducts that was allowing cool air to blow into the attic, again making the unit work harder. The technicians also noted a lack of enough vents in my house. A large master closet on an outside wall with no vent for example. They also recommended an additional vent in our master bedroom. Environment Masters performed all of the duct sealing at the same quoted price, even though it was not accounted for in the initial bill. They did charge to add the two new vents but it was VERY fair and each area they recommended were hot spots we had noticed for years. I was informed that the blower that was selected to be used in the system was out of stock so they upsized to a larger blower. This was a multi speed blower that was much more efficient and again, it was provided at no additional charge to avoid a delay in my installation. The entire crew was professional, helpful, full of information and constantly looking for ways to make the installation as efficient as possible. When they left, there was not a speck of dust to show they'd been there. Our house cools and heats so much more evenly now. We love the smart thermostat! And, efficiency? We are on budget billing so our electric bill is pretty consistent. Before the new system, our bill was $130/month. Now, it's $85. There were a couple of adjustments that had to be made after installation (like de-rating the fan even more and getting the thermostat dialed in). Every one of these adjustments was handled at no cost and the techs showed as scheduled. We were also told that the manufacturer was offering a free warranty extension and Environment Masters helped us get the paperwork submitted for that as well. The owner even called after the installation to ask if we were happy. It is so hard to find honest contractors. This is one, no questions asked."