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How to design hard pipe duct work for 5 ton unit going
How to design hard pipe duct work for 5 ton unit going across the room(75ft)? … read more
hvacdave84
hvacdave84
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My upstairs HVAC system will be comprised of 4 return sized
My upstairs HVAC system will be comprised of 4 return sized 14x25 feeding 15 4x10 vents PLUS whatever vent size you deem to be appropriate to cool a 750sq. ft. room utilizing two vents only. Three win… read more
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My furnace was installed 4 years ago. Goodman GMH95 70.
My furnace was installed 4 years ago. Goodman GMH95 70 … read more
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This question is for a heating/ventilating engineer or installer. My natural gas furnace was installed in 1995. Originally, my 90 year old home was heated by coal; the heat rose from the basement thro… read more
BillyHvac
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Phil
Phil
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I have a 1850sqft house build in 1969 year, original have a
I have a 1850sqft house build in 1969 year, original have a down flow furnace. It has a 25 ft of 12 inch metal round duct as a return in the attic. Now i want to switch it to upflow furnace with suppl… read more
airheatman
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Hi, I have a 5 ton a/c unit cooling just shy of 2,000 sq ft.
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Phil
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Contractor recently replaced 3ton gas pack, house is on crawl
Contractor recently replaced 3ton gas pack, house is on crawl space. He used round duct adapters in the 13"x16" duct openings on the unit --- then connected my existing rectangular ductwork to the sid… read more
Phil
Phil
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I am doing a house remodel. My contractor installed the duct
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MattR757
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RE: return duct sizes for trane xl14c package unit, gas/electric. Greetings.
RE: return duct sizes for trane xl14c package unit, gas/electric. Greetings. I have had my 20 year old Trane package replaced recently by a local contractor with a Trane XL14c 2.5 ton gas/electric pac… read more
Phil
Phil
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I am having a 1.5 ton unit installed in the garage and have
I am having a 1.5 ton unit installed in the garage and have some questions around duct design and installatoin. It is a simple unit with one inlet register and six supply registers.… read more
gotoman for ac
gotoman for ac
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I am building a 1800 sq ft house in the northeast with a 1700
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Douglas
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i have a heil rooftop unit on my home. i recently had a contractor
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gotoman for ac
gotoman for ac
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had a 5 ton ruud installed with a seer raqting of 11.2 and
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i just had a 3 ton hvac unit installed. they were supposed
i just had a 3 ton hvac unit installed. they were supposed to install a 20x20 air return, but on the day installed said it couldn't be done with my setup, leaving me with my original 12x24 return. my … read more
Mark Henley
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Rick, Got another hvac question for you, On a weatherking
Rick, Got another hvac question for you, On a weatherking 100k btu input hot air furnace (70-80 % efficiency? guessing) how many square inches of discharge duct work do I need to start out with ? Also… read more
Rick Mather
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hi, im doing a project in the basement of my house.It involves
hi, im doing a project in the basement of my house.It involves converting a storage room into a bedroom.I have heat and air conditioning throughout the house.The ceiling inside the unfinished bedroom … read more
Josh
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Original question what size lp gas 80% efficiency furnace
Original question: what size lp gas 80% efficiency furnace do I need for a 1 story 30x 32 building. 2x4 walls r-11 insulation 8 foot ceiling with 6 inches blown cellulose 8-36" x 36" Anderson double p… read more
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Meet the Experts:

Phil

Phil

Mechanical Engineer

7,634 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Brian HVAC Guy

Brian HVAC Guy

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I have been an HVAC/R mechanic/technician for 30+ years.

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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