Friday, June 15, 2018

The History of Air Conditioning!

  • Once considered a luxury, but now AC is so important that 48% (https://www.eia.gov ) of energy consumption in America is for cooling and heating!
  • Blocks of ice were once used to cool hospitals. These blocks of ice were shipped from frozen lakes, especially to Florida where temperatures soared !
  • Dr John Gorrie began experimenting with artificial cooling and was granted a patent in 1851 for a compressor powered by horses !
  • Eventually Willis Carrier invented the first modern electrical air conditioning unit. He obtained a patent for “his apparatus for treating air”. Willis eventually formed  Carrier engineering Corporation with six other engineers.
  • During the St. Louis World’s Fair in 1904 mechanical refrigeration was used to cool the Missouri State Building. Most systems in the beginning were too large for residential homes, and most Americans flocked the movie theaters to watch the Hollywood stars!
  • Finally in 1929 Frigidaire introduced a small enough split system to be used in residential homes.
  • Over the years many, many improvements have been made with cooling our homes and businesses making our lives more comfortable. Progress is on-going to constantly make cooling more efficient and less harmful to our planet.
  • For more more information on the History of Air conditioning, visit these sites; https://www.energy.gov , https://www.energy.gov/heating-cooling , https://www.energy.gov/eere/buildings/emerging-technologies , https://www.energy.gov/eere/articles/energy-department-invests-nearly-8-million-develop-next-generation-hvac-systems .


Thursday, May 31, 2018

Some simple steps to do, as a homeowner, in between professional maintenances 

  • Keep your exterior unit free and clear of any debris by removing any vegetation that may be nearby.
  • Keep your indoor registers unobstructed, so the air can flow freely throughout the home
  • Keep your indoor registers clean and dust free. Pet hair/fur and other household debris can clog up the interior part of the system if it is sucked in.
  • If you have done recent interior renovations, be mindful that dust and debris can also get sucked into the system too.
  • Air filters should be changed, or washed (if it's a reusable, washable filter),  every 30 to 90 days. Make a note on your calendar, put an alert on your smart phone to remember to check you filter regularly. We can provide you the information and the filters to change them yourself. Please call 860 357 4952 information. 
  • Rodents, bugs and other pests can wreak havoc on your indoor system and cause a lot of destruction. Be sure to prevent them  from invading your system and keep them out!

      The benefits of maintaining your system 

  • Better air quality, especially for those that suffer from asthma or other illness
  • Greater efficiency, performance and lower utility bills.
  • Maintains the longevity of your system and keep expensive repair costs down!

Wednesday, May 16, 2018

After Storm

After a Storm


  • First and foremost, secure the safety of your family.
  • Do not enter your home unless you’re sure it’s safe. Depending on the type of disaster, there may  be exposed electrical wires, standing water or a natural gas leak. If you have any    concerns about  the structural or environmental safety of your home, do not enter. 
  • Call your local utilities company to report a gas leak, or power outage. 
  • Call Douglas Mechanical if you should have any trouble with your AC and heating system,   860 357 4952. 

Tuesday, May 1, 2018




Have you thought about the air in your home lately? Is it clean enough? Is is being filtered thoroughly? Does the duct work contain mold? 

Many of these questions can be answered by our technicians during a routine,annual AC maintenance!

There are several options you can do to ensure the healthiest air is running through your home. Be sure to change the filter every 3 to 4 months, consider changing your disposable filter to a re-usable washable filter, and even better  add ultraviolet light in your HVAC air handler to kill microbes as they pass through the system. Douglas Mechanical can provide more information on all these options, give us a call or email today!





Tuesday, April 24, 2018


FINALLY, New England is warming up!

Let's not forget how important it is to perform a routine maintenance on your AC system before the summer heat is upon us! Here is a list of  the items we will do; 

Spring Cooling Tune-Up Includes

                                               ·        Check refrigerant pressures
                                               ·        Check batteries and program thermostat as needed
                                               ·        Clean or replace filters (may be additional charges)
                                               ·        Inspect and clean blower cabinet as needed
                                               ·        Inspect condensate drainage and pump
                                               ·        Inspect and test motors
                                               ·        Inspect, clean and service air cleaner/humidifier
                                               (we will provide humidifier pad for additional cost.)
                                               ·        Inspect and adjust drive pulleys/belts
                                               ·        Inspect all electrical connections
                                               ·        Lubricate parts as needed
                                               ·        Check expansion valve and coil temperature
                                               ·        Check pressure switch cut- out setting
                                               ·        Test operating pressures
                                               ·        Inspect start capacitor and potential relay
                                               ·        Visually inspect compressor /Duct-work and check amp draw
                                               ·        Cycle system and check overall operation
                                               ·        Report any equipment deficiencies/potential issues


Thank you, we look forward to working with you!

For Financing Programs offered through Energize CT


Douglas Mechanical Services, Inc
820 Four Rod Rd, Berlin CT 06037
Office 860 357 4952/Fax 860 357 4803
*SALES * SERVICE * INSTALLATION * REMODELING*

T he H istory of A ir C onditioning! O nce considered a luxury, but now AC is so important that 48% ( https://www.eia.gov   ) of en...