Click for Discount RV Parts Central Oregon's #1 Mobile RV Repair With Over 24 years experience in the rv industry you can be assured that your rv is receiving the best service available! "I called Accurate RV because my air conditioning unit in my RV went out. They were there within an hour and fixed the problem quickly and for a fair price" "Jason from Accurate RV is the only person that I allow to work on my RV, he knows what he is doing and his rates are unbeatable" We Accept All Major Credit Cards RV Repair in Central Oregon Welcome to Accurate RV mobile service, LLC. Accurate RV is the most affordable mobile rv repair company in Central Oregon. We can provide you with the most honest and timely repairs, lowest hourly rate and service calls. Accurate means doing it right the FIRST time. We also have the most competitive prices on all parts and accessories, find it for less and we will beat it! Call us and let us come to you! Save time and money with our services.

”Let us come to you for the most honest and accurate repairs for the best price available". Accessory Installations and Services Awning Repair and Services Battery Testing and Replacement Certified Appliance Repairs and Services Hydraulic System Repairs and Services Satellite & TV Installations and Repairs Solar Installations and Repairs Water Pump Repairs and Services Zamp Solar systems specialist Over twenty year’s factory trained service center Authorized extended warranty mobile repair shop Preferred Authorized Service Center / Warranty Repairs for: State of Oregon / Building Codes Division for RV Repairs & Alterations State of Oregon / Fire Marshals office for LP Gas Fitter & Co. Rep. ASE – Certifications for Refrigerant The AC guy that fixed my AC recently said I should turn my AC fan on 24/7 and this would increase the efficiency of my AC system. I looked it up and found this same claim in several places:

City Data forum thread about keeping AC running Several places say to use ceiling fans to circulate air as it makes the air "feel" cooler but do not increase the efficiency of the AC unit: Use a ceiling fan or portable fan to supplement your air conditioning. A fan can make you feel three to four degrees cooler (and only costs a half-cent per hour to operate) so you can set your thermostat a few degrees higher and save on cooling costs. Use in occupied rooms since fans cool people, not rooms.2 If you choose to operate your fan and your AC simultaneously, you will be comfortable at a higher thermostat setting because of the cooling effect of moving air. Higher thermostat settings result in energy Green Building Advisor article about ceiling fans To clarify, I'm talking about the fan system in the AC unit running, and not the compressor running. I'm skeptical of everyone's claim that it would increase the efficiency of the AC unit considering it's not introducing cooler air into the house if it is 105 degrees outside.

Is leaving the AC fan on 24/7 more efficient than leaving it on auto? To further clarify, this is with regard to a central system in houses and not a window unit. Although I think this same question could probably apply to window units. The answer seems to be "it depends". ac unit not holding chargeGiven the commerciality and competitive nature of the HVAC industry, I had a lot of trouble finding peer reviewed academic studies that test your claims. heat pump unit 43Therefore, I took a look at the patent records for evidence, which led me to US Patent #5492273. what is ton on ac unitThis patent, owned by General Electric, describes a variable-speed blower that can be controlled independently of the compressor. Here are some claims made in the background section of the patent:

In general, total heating of air conditioning capacity of a system increases as the indoor air flow rate increases. However, upon reaching a particular air flow rate, the blown air will be less warm or less cool, depending on the mode of the HVAC system, than the air in the room. For air conditioning systems, the indoor coil, or evaporator, tends to "saturate". In other words, the the coil extracts incrementally less energy from the air for equal incremental changes in air flow. Further, the electric power consumed by the indoor blower motor increases rapidly as the air flow rate increases. The system dissipates electric energy as heat in the same air that is being cooled by the system thereby reducing its net cooling capacity. Due to the effects of coil saturation and blower motor power consumption, net total capacity peaks at a certain airflow rate. Let me briefly summarize the salient points of that paragraph before continuing: For traditional, single-blower-speed air conditioning systems, the efficiency of the system does not scale linearly with air flow speed.

The blower motor's electrical usage scales superlinearly with respect to air speed. The faster the air speed the more the coil heats up, thus reducing its cooling efficiency the next time the condenser turns on: an increase in the air flow rate beyond what is required warms the evaporator coil to produce a higher load on the compressor motor. The patent goes on to explain that the reason why most traditional, single-speed blowers don't keep the blower on after the condenser has turned off is exactly because of point #3: The airflow will heat up the coil and require the condenser to remain on longer during the next cycle. The patent also claims that some traditional systems try and avoid this by only switching off the compressor when in blower-only mode (i.e., also keeping pumping the refrigerant), however, the patent says that that uses almost as much electricity as running the entire system:[delay] turning off the indoor blower fan after after the compressor cycles off.

However, the system also continues to draw power at the same level as during the cycle and causes additional energy to be consumed in the indoor fan motor. This claim is a bit surprising. The patent could of course be embellishing that claim in order to make its technology seem more useful. The patent describes a variable speed blower motor that can work independently of the condenser to set the air flow to the optimal speed for cooling. The thermostat, with information from both indoor and outdoor temperature and humidity sensors, can then intelligently decide how to control both the blower and the condenser. Therefore, I'd say that if you have one of these variable-speed blowers and intelligent thermostats (they're getting more common now; I have one in a house I recently bought), I'd say that it would be a bad idea to force the blower to stay on all the time because the system is smarter than you! If, however, you have an older, single-speed system, that question is a lot more complicated, and it might actually be detrimental to run the blower all of the time.