as an HVAC design professional, everything the Kimberly said, is 100% what SHOULD be done, and is what's done commercially, load calcs are very important!
I dont agree. Quoting my summary specifications for HVAC ... "ASHRAE Manual J for calculating heat and cooling loads. Size ducts and equipment by design … Rule-of-thumb calculations are not allowed, such as 600 sft/ton. Provide accurate room-by-room load calculation to select equipment and to design duct system that will perform at maximum efficiency using ACCA's design protocols, Manuals S, T, and D. Consider Summer and Winter Solar … see this website for position of sun: www.suncalc.org/". And, you dont "put ducts wherever you can".
Matt, thanks for putting these videos out. Your production quality has absolutely ramped up, and the content provides a really great foundational basis for considering so many elements of a build. It's all such a stark reminder of how considerate and deliberate you really should be when designing and then executing a remodel or build. Again, many thanks.
Yup, it all starts with an energy model! Our process has a different step 2. We think step 2 should be exploring building shell improvement opportunities rather than equipment selection. At this step we do some iterative design charrette exercises. Once you've settled upon how the house is improved, rerun the load calc, THEN pick equipment.
I have a small HVAC business. Before getting big im learning how to use the software so i can do it the right way. Its pretty tough but going to be worth it. None of that rule of thumb here. Good job lady.
@@elangz9201 mostly Split systems, oil boilers, oil furnace gas furnace, heat pump, ductless, geothermal. Slowly getting into installs. Im going to start my youtube channel soon. Lmk if you have any ?
Well, a 1 million dollar home can often be big, or complex, so the engineering costs for those homes typically makes sense. Or, like Matt said, it may even sometimes come out to 0.5%
I contacted an HVAC company to install the ductwork and and the heating and cooling equipment $35,000 in Boston, MA. I hired a company like hers to do the calcs for under $500. I received the plans and i am running the ductwork myself. I will also run the electrical for the units and i will just need to hire a plumber to run the gas pipes. I estimate this whole project to run me under $10,000. Its so important to get the numbers right, you only get one shot at this.
As a female who likes construction, it is always AFFIRMING to see WOMEN in this field 😃my heart smiled when she began to talking 💕. Matt needs more of this on his channel 😉.
Matt, I’m getting ready to have a house built that will have an above garage apartment. The house is one story and the main HVAC system will be in the crawl space. How would you suggest heating and cooling the apartment space? Dual zone, two separate units, or a mini split? My concern with a mini split is keeping the living area, bedroom, and bathroom of the apartment an even comfortable temperature.
I must say the video, editing and production are all excellent. I am a little disappointed in the content in that no real design choices and decisions are discussed, much like the earlier insulation video. At least "This Old House" did some of that in their efforts.
+Ping Ho Matt only has a million other videos on HVAC. How dare he not cater fully to my desires with this one. I'm better off with those real actors over at T.O.H.
Well, to be fair, it is virtually impossible to throw out some choices in this regard, specially considering what the message is. The world of HVAC is vast and, as the video tries to convey, every job must be tailored to the project.
I think this was an introduction to the concept, indeed existence of such services. I am contemplating a new HVAC system for a post-war, 60 year old home. I am often uncomfortable inside the home and have wished for more than just hot air or cold air. This opened my eyes to what is out there TODAY, and before this video, I as not aware of such HVAC and comfort design services. I have been critical of a couple of Matt's videos on ERVs and HRVs because he never really explained to the average homeowner, new to the topic, what they do, why I might want one and how they integrate into a modern HVAC design.
Hi Matt and Kimberly, great video - thank you for putting it together. What do you recommend for filtration when installing a ducted system? This question applies to both the ERV and the air handler. Thank you for your time.
It's not that these people are wrong but it's going to cost you 4 times as much and still be hot upstairs in the summertime. Every house I go into is pulling 80% of the return air from the first floor. Get that balanced out and you will have a much more comfortable home
Hey Matt, How important is it to have a local HVAC designer? I live in the Puget Sound area of WA state. My wife and I are building a home this year and want to get the HVAC system designed/engineered. We’ve had some trouble finding an HVAC designer locally that isn’t already busy or who hasn’t shifted their business to mostly commercial building. However, I can find many online companies that will work with us. So, I was wondering, how important is it to find a local HVAC designer? Would it be appropriate to hire Positive Energy?
Yeah thats all good but not being able to give a solid estimate on the cost is a sticking point for alot of people. Just telling people that it will cost 1% or 2% of the total cost to build probably scares alot of potential customers off cause at the end of the day people want to be able to control costs or know exactly how much something will cost. If this company would have a set price for say different sq ft then it would be better.
Who are you going to hold accountable when/if you have issues with the system?? The 3rd party “design” company or the install contractor?? As a professional HVAC contractor I refuse to even look at a 3rd party’s Manual J,D,S,Z,C or T... ultimately I’m the one that’s held liable for the system... my ass is on the line.. the biggest problem with this industry is the GC wants to get the cheapest possible HVAC contractor to do the work, and they in-turn have to cut every corner they possibly can to try an turn a profit. I blame the GC 99.9% on the shitty mechanical systems you see in homes today..
A/C SuperKool You are exactly right, the residential building industry is all about who is the cheapest. It is a race to the bottom and it causes good contractors to loose work.
In FL here it's a shame how people are sold just a condenser with their 40 year old blower and ductwork, code changes should prevent this. Efficiency is all about sizing and duct work, my neighbors elec bill is 2-3 time mine because they have mismatched poor AC. In the hottest months my AC operates 4-4.5 hrs per 24hr. Either side of me they run continuously, and very old units. Goes the same for heat pump.
You're right, duct design isn't rocket science but when I see that virtually all homes have restricted duct systems, many of them significantly so, I think it's worth more attention.
It actually does stand for Heating Ventilation and Air Conditioning. I have not heard of HVAC used as a High Volume AC, but that is a thing for commercial equipment. I think it is only referred to as HV Ventilation.
as an HVAC design professional, everything the Kimberly said, is 100% what SHOULD be done, and is what's done commercially, load calcs are very important!
I dont agree. Quoting my summary specifications for HVAC ... "ASHRAE Manual J for calculating heat and cooling loads. Size ducts and equipment by design … Rule-of-thumb calculations are not allowed, such as 600 sft/ton. Provide accurate room-by-room load calculation to select equipment and to design duct system that will perform at maximum efficiency using ACCA's design protocols, Manuals S, T, and D. Consider Summer and Winter Solar … see this website for position of sun: www.suncalc.org/". And, you dont "put ducts wherever you can".
Matt, thanks for putting these videos out. Your production quality has absolutely ramped up, and the content provides a really great foundational basis for considering so many elements of a build. It's all such a stark reminder of how considerate and deliberate you really should be when designing and then executing a remodel or build. Again, many thanks.
Yup, it all starts with an energy model!
Our process has a different step 2. We think step 2 should be exploring building shell improvement opportunities rather than equipment selection. At this step we do some iterative design charrette exercises.
Once you've settled upon how the house is improved, rerun the load calc, THEN pick equipment.
I have a small HVAC business. Before getting big im learning how to use the software so i can do it the right way. Its pretty tough but going to be worth it. None of that rule of thumb here. Good job lady.
So what kind of HVAC services u providin? I'd very much like to know bcus im planning to start a hvac business too but dont know where to begin
@@elangz9201
So far. service for residential and light commercial.
@@elangz9201 mostly
Split systems, oil boilers, oil furnace gas furnace, heat pump, ductless, geothermal. Slowly getting into installs. Im going to start my youtube channel soon. Lmk if you have any ?
How do I find a good company like Positive Energy. That is the hardest part of the whole job.
Positive Energy does work around the country. Go to the website for details.
1% of a $1,000,000 home is $10,000. That's steep for engineering of only one system in the home.
Well, a 1 million dollar home can often be big, or complex, so the engineering costs for those homes typically makes sense. Or, like Matt said, it may even sometimes come out to 0.5%
I contacted an HVAC company to install the ductwork and and the heating and cooling equipment $35,000 in Boston, MA. I hired a company like hers to do the calcs for under $500. I received the plans and i am running the ductwork myself. I will also run the electrical for the units and i will just need to hire a plumber to run the gas pipes. I estimate this whole project to run me under $10,000. Its so important to get the numbers right, you only get one shot at this.
Awesome video! So cool to see Kimberly in action!
As a female who likes construction, it is always AFFIRMING to see WOMEN in this field 😃my heart smiled when she began to talking 💕. Matt needs more of this on his channel 😉.
Matt, I’m getting ready to have a house built that will have an above garage apartment. The house is one story and the main HVAC system will be in the crawl space. How would you suggest heating and cooling the apartment space? Dual zone, two separate units, or a mini split? My concern with a mini split is keeping the living area, bedroom, and bathroom of the apartment an even comfortable temperature.
I must say the video, editing and production are all excellent. I am a little disappointed in the content in that no real design choices and decisions are discussed, much like the earlier insulation video. At least "This Old House" did some of that in their efforts.
+Ping Ho Matt only has a million other videos on HVAC. How dare he not cater fully to my desires with this one. I'm better off with those real actors over at T.O.H.
Well, to be fair, it is virtually impossible to throw out some choices in this regard, specially considering what the message is. The world of HVAC is vast and, as the video tries to convey, every job must be tailored to the project.
>Critiquing Matt Risinger against an entire television production
what a compliment.
I think this was an introduction to the concept, indeed existence of such services. I am contemplating a new HVAC system for a post-war, 60 year old home. I am often uncomfortable inside the home and have wished for more than just hot air or cold air. This opened my eyes to what is out there TODAY, and before this video, I as not aware of such HVAC and comfort design services. I have been critical of a couple of Matt's videos on ERVs and HRVs because he never really explained to the average homeowner, new to the topic, what they do, why I might want one and how they integrate into a modern HVAC design.
Hi Matt and Kimberly, great video - thank you for putting it together. What do you recommend for filtration when installing a ducted system? This question applies to both the ERV and the air handler. Thank you for your time.
It's not that these people are wrong but it's going to cost you 4 times as much and still be hot upstairs in the summertime. Every house I go into is pulling 80% of the return air from the first floor. Get that balanced out and you will have a much more comfortable home
I like having a third party pick the equipment. less likely to cut corners or try to upsell.
Off topic, but what model green office chairs are those?
Third party is also an additional cost. It depends on how expensive they are compared to how crooked your HVAC installers are.
That might work out sometimes. I wouldn't install someone else's equipment picks with my warranty. My job, my design, my warranty, my reputation.
Hey Matt,
How important is it to have a local HVAC designer? I live in the Puget Sound area of WA state. My wife and I are building a home this year and want to get the HVAC system designed/engineered. We’ve had some trouble finding an HVAC designer locally that isn’t already busy or who hasn’t shifted their business to mostly commercial building. However, I can find many online companies that will work with us. So, I was wondering, how important is it to find a local HVAC designer? Would it be appropriate to hire Positive Energy?
Yeah thats all good but not being able to give a solid estimate on the cost is a sticking point for alot of people. Just telling people that it will cost 1% or 2% of the total cost to build probably scares alot of potential customers off cause at the end of the day people want to be able to control costs or know exactly how much something will cost. If this company would have a set price for say different sq ft then it would be better.
Do you select structural design consultants as well, or leave it to the architect?
Simple example.. nice video!
Who are you going to hold accountable when/if you have issues with the system?? The 3rd party “design” company or the install contractor?? As a professional HVAC contractor I refuse to even look at a 3rd party’s Manual J,D,S,Z,C or T... ultimately I’m the one that’s held liable for the system... my ass is on the line.. the biggest problem with this industry is the GC wants to get the cheapest possible HVAC contractor to do the work, and they in-turn have to cut every corner they possibly can to try an turn a profit. I blame the GC 99.9% on the shitty mechanical systems you see in homes today..
A/C SuperKool You are exactly right, the residential building industry is all about who is the cheapest. It is a race to the bottom and it causes good contractors to loose work.
In FL here it's a shame how people are sold just a condenser with their 40 year old blower and ductwork, code changes should prevent this. Efficiency is all about sizing and duct work, my neighbors elec bill is 2-3 time mine because they have mismatched poor AC. In the hottest months my AC operates 4-4.5 hrs per 24hr. Either side of me they run continuously, and very old units. Goes the same for heat pump.
Are these people an engineering firm? Or do they literally just do load calcs?
It is often done poorly, but duct design isn't rocket science.
engineers
You're right, duct design isn't rocket science but when I see that virtually all homes have restricted duct systems, many of them significantly so, I think it's worth more attention.
When are you coming to Baltimore?
No mention of SEER numbers or types of units... 🙄
So 3rd party is what i need.
No hvac company wants to do anything beyond basic.
"500 sft / ton", "put the ducts wherever we can fit them" ... no way I will let a contractor with that mentality anywhere near my design.
Real Positive
looks like Matt is having a hard time keeping his eyes up ;-)
It DOES NOT "start with 500 sq. ft. per ton." It starts with a Heat Load Calculation done by a TRUE professional.
LOLz hahahahaha!!!
a lot of bla bla but not much useful info
That’s not HVAC... that’s residential A/C. .. HVACis HIGH VOLUME AIR CONDITIONING usually for business and commercial buildings!
+nytom4info it stands for Heating Ventilation and Air Conditioning
lol you don't know what HVAC stands for yet you're saying this isn't HVAC? You seem smart
High volume air conditioning? 😂🤣😂🤣😂🤣😂🤣😂🤣😂
High volume air conditioning 😱 omg u r a genius
It actually does stand for Heating Ventilation and Air Conditioning.
I have not heard of HVAC used as a High Volume AC, but that is a thing for commercial equipment.
I think it is only referred to as HV Ventilation.
"It all starts with a load calculation". lol. Wrong. It starts with deciding ducted vs. ductless. This broad is clueless.
Actually you are incorrect. Even ductless designs need the calculations to size them properly.
Lol dick