HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

Location: Calgary, Alberta Canada1960 construction 2 storey…

Customer Question
Location: Calgary, Alberta Canada 1960...
Location: Calgary, Alberta Canada
1960 construction 2 storey wood frame house with 150,000 BTU Burnham (age 1999) atmospheric boiler heating and Tekmar Controls operating a perimeter hot water heating system. The boiler gets combustion air through a 10" insulated flex pipe/vent system. The heating system works great. I considered a new condensing boiler but my plumber suggested that I wait until the boiler fails.
The house is being renovated, however the heating system is not being modified except for the minor relocation of some heating runs.
Situation
Building inspector requires a HRV system to be installed. It is very difficult because there are no existing chases or heating ductwork to distribute the Makeup Air.
Questions
1. Will a correctly balanced HRV system interfere with the passive fresh air system of the boiler? I would expect that pressurizing the house will cause the boiler fresh air vent to reverse direction of flow (out rather than in).
2. If I choose to upgrade the boiler now, is there a condensing boiler that has an HRV built in?
3. The HRV ductwork through the house will be 'supply only'. There is no air return duct system back to the exhaust side of the HRV unit. I fail to understand how 'contaminated air' from the 2nd storey, will make its way back to the mechanical room in the corner of the basement without some type of return air ductwork?
Forgive these dumb questions...but I am a land developer.
Submitted: 3 years ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Customer reply replied 3 years ago
(Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from yo. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Answered in 1 day by:
6/6/2015
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 3 years ago
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 23,154
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
Verified
Hello,
Use reply please
Is the inspector wanting the hrv for combustion air via a positive pressure intake? Or is it a fresh air requirement to be introduce into living space?
Ask Your Own HVAC Question
Customer reply replied 3 years ago
fresh air only
Customer reply replied 3 years ago
Combustion air to the natural gas boiler is via a 10" insulated vent from the outside.
Customer reply replied 3 years ago
The HVAC Inspector is now calling for Fresh Air Vents in; living room, den, dining room, master bedroom and 3 bedrooms. Dirty Air Returns in; utility room, 3 bathrooms, kitchen, main foyer, walk-in closet. Our plumber is suggesting that the duct system consist of a 7" feeder pipe with 4" distribution lines off the feeder going to the rooms. Dirty Air Returns are the same. Since there is no ducting at present, this mean bulkheads throughout the house. Importantly, I just halted the kitchen cabinet production as these will likely have to be changed to accommodate the bulkhead. Help!
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a hvac technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask BillyHvac Your Own Question
BillyHvac
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 23,154
23,154 Satisfied Customers
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics

BillyHvac is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

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

HVAC Technician

1,024 satisfied customers

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

< Previous | Next >

Related HVAC Questions
I have a GMEC960803BNA furnace and I am retrofitting and HRV
I have a GMEC960803BNA furnace and I am retrofitting and HRV system into my house. Because it is difficult to get all of the required ducting for a standalone system installed in the house, I was look… read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,974 satisfied customers
My HVAC contractor installed a Lennox HRV5-150 in my Durham
My HVAC contractor installed a Lennox HRV5-150 in my Durham NC home. He said he could adjust the intake air and outflow air speeds to generate a slight positive air pressure in my home, and also provi… read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
State Licensed Mechanical Contractor
23,154 satisfied customers
Hello , I have a gas fired ,steam system boiler in the basement
Hello , I have a gas fired ,steam system boiler in the basement and a 50 gallon water heater that is vented into a 8" chimney that was relived with galavized pipe about 5 years ago. The basement is fi… read more
Nathan Marshall, MP
Nathan Marshall, MP
Master Plumber,HVAC Tech,Tradesman
Vocational, Technical or Trade School
275 satisfied customers
I currently have a Slant fin/Sentry Boiler S-60. My question
I currently have a Slant fin/Sentry Boiler S-60. My question is can a central air condition unit be added....I have a slab house(no basement)?… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I recently had my AC unit replaced with a brand new, huge commercial
I recently had my AC unit replaced with a brand new, huge commercial unit for my two story house. I was told the trunk lines needed replacing and had that done as well. BUT the rooms upstairs are stil… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
My in-slab floor heating is constantly on (heat demand). A
My in-slab floor heating is constantly on (heat demand). A Tekmar system. We're being cooked when it's on. I would like to fix it.… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I want to add a whole house fan to my home in FL. Each room
I want to add a whole house fan to my home in FL. Each room has a return vent. Is there a reason I could not connect the WH fan to the existing ductwork? If no, why?… read more
servtech50
servtech50
HVAC/R service tech
216 satisfied customers
In my home inspection process, I was advised that the heating
In my home inspection process, I was advised that the heating system draft control (automatic) return air vent is terminate at the unit, and should be pipe to the exterior for proper functioning. Can … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
I would like to know why i would have an outside vent ducted
I would like to know why i would have an outside vent ducted into my return air system? could anybody answer that?… read more
Bart Jay
Bart Jay
Vocational, Technical or Trade Scho
596 satisfied customers
I have purchased a commercial kitchen in Calgary, got all ready
I have purchased a commercial kitchen in Calgary, got all ready to open, then found my make-up air system to be merely a passive vent. I require by city code a heated, forced system and cannot open un… read more
N4IEA
N4IEA
Customer Service
Associate Degree
227 satisfied customers
If a commercial space is approx. 1100 square feet and the City
If a commercial space is approx. 1100 square feet and the City Code requires 1cfm of outdoor air, can 6 small 200cfm units be used to pass the air through an existing 3ton RUUD system? Can the Bryant … read more
N4IEA
N4IEA
Customer Service
Associate Degree
227 satisfied customers
I have a home built in 1917 with a forced air natural gas furnace.
I have a home built in 1917 with a forced air natural gas furnace. The kitchen has two small registars (heat vents). The kitchen is the hardest room in the house to heat as it has three sides to the w… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
I just replaced my gas hwt with a rheem and noticed on page
I just replaced my gas hwt with a rheem and noticed on page 15 of the manual and air handler system linked to hwt - could i install this and use the existing ducting from my gas furnace for air delive… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
How to set the blower speed to save on heating costs and save
How to set the blower speed to save on heating costs and save the equipment, too? We have installed a high efficiency hybrid heating system. It is a Carrier infinity, with furnace ICS, and 19 seer hea… read more
HVAC_Doug
HVAC_Doug
Vocational, Technical or Trade Scho
How much smaller of a furnace can i put in if the whole house
How much smaller of a furnace can i put in if the whole house is foam insulated? And do I need to do any special venting or fresh air in the house?… read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
State Licensed Mechanical Contractor
23,154 satisfied customers
My house built in 1925 has mouat steam traps. as I so not
My house built in 1925 has mouat steam traps. as I so not get heat all the way across my radiators unless I crack the union at the trap I am assuming the traps are bad. I have removed and examined one… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
I have a unit that is mounted on the roof of my house. We just
I have a unit that is mounted on the roof of my house. We just bought the house in Feb. All the ductwork is in the atic and is beginning to sweat and cause cieling damage. I've kept a clean return fil… read more
The Home Smithy
The Home Smithy
Home Improvement Repair Consultant
1,890 satisfied customers
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.

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.

Show MoreShow Less

Ask Your Question

x