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What to Know About C-Wire If you’re upgrading your HVAC thermostat, it’s a good thing to find out in advance if your existing system provides a c-wire. Today’s smart thermostats provide a great deal more options and convenience such as wifi connectivity and a bigger, brighter, multi-functional control screen. These improvements typically draw more electricity than the existing thermostat you’re replacing. The c-wire (“c” stands for “common”) is an important extra electrical wire that enables continuous 24-volt power to operate newer smart thermostats. If you don’t have one installed with your existing model, you’ll probably need to have it installed in order to adequately power the new unit.

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Smart Thermostats , c-wire , thermostat issues , thermostat problems

What Smart Thermostats Can Do Will Amaze YouHomeowners who are looking for ways to save energy and money – which describes nearly anyone who owns a home – look no further. With the use of smart thermostats, it's possible to get your energy usage under control once and for all. If these devices are used wisely, you can say goodbye to huge heating and cooling bills.

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New Haven , Fort Wayne , programmable thermostats , indiana , save energy , Smart Thermostats , energy usage chart

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"We cant say enough positive things about this company and those who work there. Dalton was my tech he is very thorough with both my heating and air this year !!"

Rhonda Ludlow
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"Ked was my "usual" service tech for many years. He was always friendly & kind...and didn't mind letting my big dog say hi. He was always professional and efficient. I liked having the piece of mind in knowing my HVAC needs are met & running well. I have used their maintenance plan for many years now, and haven't been disappointed. Well, Caleb didn't disappoint either. He loved my "big boy" and had a great sense of humor. He was very thorough in servicing my air conditioner. I feel I get my money's worth from my maintenance plan each year. I love when they say, "Everything looks good, no problems. See you in the Fall.""

Donna D.
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"22 years ago Hartman's installed our furnace/AC. When the unit recently started having serious issues Hartman's tried to repair the unit, spending a few hours but the aging unit had given all it could and wouldn't stay fired after the flame sense was cleaned and the rest of the unit examined. That tech, who's name I have unfortunately lost - possibly Jim, thoroughly explained everything during his inspection so I could relay the information to my husband. After I discussed financing options with Hartman's for the replacement Rick Hartman cared for every detail and made the transition seamless. Our issue began on 3/10 and the replacement unit was installed on 3/14; a needed part was driven overnight to meet the installation date. Kevin and Jason from the install crew were very knowledgeable, professional and quickly fabricated a 3 in metal base for a perfect fit. This crew comes prepared! Josh set the unit air force specs 4 times until we found my personal preference. Roger Hartman came out during installation to give us our paperwork and check with the install crew. The installation was completed in 7 hrs and the crew never took a break! I would hire Hartman's any day for a red carpet customer service satisfaction experience with a company that has a great reputation, a friendly and professional crew with many years of accumulated experience, all the employees clearly work well together and have excellent knowledge and workmanship and work ethics. I highly recommend Hartman's, you won't be disappointed. They not only arrived on time but we're actually a little early! "

Christine B.
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"Excellent job!! He explained everything."

Terry F.
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"Hartman Bros does a good job They installed my Lenox system and maintain it every year. They have always been responsive and professional. I will use them for my next system."

Judy Gleason
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"Josh was very courteous and professional. He took the time to explain to me and show me what was going on inside the furnace. I felt really bad that we needed to call him out on a Sunday but with the inside of the furnace iced up our air just wasnt working and he got us up and running in no time"

Dorothy Poling
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"They are always fast and efficient. Never had to wait long for service. Today Brian did an outstanding job. Diagnosed the problem immediately and had the furnace up and running."

Joy Miller-Long
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Aaron Rumple
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