3 ton unit - 2200sq ft home Re: 3 ton unit - 2200sq ft home B.A. King Home Inspections, LLC Serving Charlotte NC area and Rock Hill SC areas. CMI Certified Master Inspector and Independent License NC2449 and SC1597 "Discovery consists in seeing what everyone else has seen and thinking what no one else has thought." - Albert Szent-Gyvrgyi, Nobel Prize for Medicine 1937 I have 3.5 ton, water source hp, on 2950 ft., works great. I will probaly add zoneing to it next year along with a masterbath upgrade. There are a lot of factors that get consideration when sizing a unit. I looked at a retail space once that needed 5 ton of AC just for the lights. R-30 cellulose in attic. I just don't want to get a call down the road from the homeowner telling me that his a/c unit is constantly running to maintain the temperature. It would have been nice for the builder to zone the a/c but it's one thermostat (upstairs location) for the entire home. Like i said, it seemed to do fine in the short term.

General rule of thumb is 1 ton to 500-600 sq.ft. Would you recommend an hvac guy to evaluate or leave it be? This is the first time I've come across a 1 ton per 750 sq.ft of home so I just wanna be sure before I give the report. I mean, it's not the end of the world to recommend the builder get an hvac guy to look at it and let him make the call.ac unit circuit board General rule of thumb is 1 ton to 500-600 sq.ft. window ac unit electricity usage If the unit was working properly at the time of the inspection, that is what I would report.how much does a 7 ton ac unit cost The inspector is not required to: A. Determine the uniformity, temperature, flow, balance, distribution, size, capacity, BTU, or supply adequacy of the cooling system.

Many things determine whether the system is sized properly for the home. My house has a 3 ton unit for 1800 sq. ft. In VA, my house had a 3 ton unit for 2800 sq. ft. Don't interfere with anything in the Constitution. That must be maintained, for it is the only safeguard of our liberties. I mean, it's not the end of the world to recommend the builder get an hvac guy to look at it and let him make the call. If you are dealing with a Builder who do you suppose he would have come look at the unit. The guy that installed it. Would you recommend an hvac guy to evaluate or leave it be? Leave it be don't go there you as an inspector with no HVAC training as Blaine stated are only required to operate the unit from its stat to many variables. If you can calculate the heat load go for it if not leave it be. As an HVAC/HI I don't go there unless I am 100% postive that the unit can not cool the home and I will call for a heat load to be performed. I would say this has happened only twice in my tenure as a HI.

And there were special circumstances As you do not know what your doing (or you wouldn't be asking), I would recommend that you keep away from attempting to report anything on what you suspect concerning equipment sizing. This evaluation is not within the scope. Guessing will get you in trouble. If you call in an HVAC guy and it's ok, your wrong. If you say it's ok, you might be wrong. Document your findings at the time and date of inspection. Indoor and outdoor conditions. If you write anything beyond your scope, you had better know what your talking about. There are heat/cooling load calculations (which are a hell of a lot more complicated than ton/sf) that can be done. Even the HVAC guy won't likely get it right. The more you say, the more you may get in trouble. First off, unless the system has a zoning system, you can not effectively heat and cool a two story house with one unit. This has to do with the psycrometric properties of air, not equipment design.

When the weather changes, the client may get uncomfortable. If you said it was properly sized, they may be knocking on your door, asking for you to explain. Sizing is not the only thing that effects HVAC control. I think it depends more on number and placement of return air ducts. My home is 2 story and the A/C works fine and there is no zoning. Cold air is heavy and takes more to push it to second floors. Ideally the return air ducts should be at ceiling level to pull the hot air off ceiling imho. thanks for the replies. I simply reported that the ac was working properly at the time of inspection without getting into the size of the unit. I realize that this is beyond the SOP but so are a hundred other things that we do. I just don't want a phone call later on if that unit craps out and they find it was too small for that size house. But, I do understand where everyone is coming from and decided to take that route. If you set the expectations with your client through your pre inspection agreement, and explain to them at the inspection that you cannot tell them through a visual inspection whether the unit is properly sized, you won't get that phone call.

If you do get the call, you can remind them what you explained to them at the inspection. Re: 3 ton unit - 2200sq ft home Kelvinator Residential 3-Ton 14-SEER Central Air Conditioner ENERGY STAR Item # 577361 Model # JS4BE-036KA Composite base pan absorbs sound and is corrosion-resistant and stronger and lighter than steel Durable, attractive cabinet design using galvanized steel with polyester urethane finish Micro-channel coils in all model which provides high corrosion resistance and comes with field installed TXV Easy compressor and control access designed to make servicing easier for the contractor, access panels are provided to all controls and compressor from the side of the unit Permanently lubricated, heavy-duty PSC motor for long-lasting reliability and quiet operation; requires no maintenance and is completely protected from rain and snow High-pressure switch protects against abnormal high system pressures The 950 hour salt spray finish is 1.5mill thick and resists corrosion 50% better than comparable