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Posted by Jules on October 29, 2009, 8:04 am
On Wed, 28 Oct 2009 18:35:49 -0400, Jim Elbrecht wrote:
show/hide quoted text
> They ask what appliances I have running, and ask to be notified if I
> add more. Then they ask about family size. A chart helps them
> determine that a family of 4 with a stove, water heater, and dryer
> will use nn gallons a month. Then their computer keeps historic
> records and they adjust accordingly.
>
> I threw them off when I added a space heater. Now they also take into
> account heating degree days & historic usage. It took them a
> couple years to get a handle on that because I use the gas heater more
> in spring and fall than the dead of winter. But now they have it
> down. I rarely go below 40% full.
Interesting way of doing it! I guess that anything apart from heating
will be pretty consistent most of the year (drier use falling during
summer if you hang clothes out instead). The heating can probably be quite
variable - but maybe they're smart enough to look at the weather and
factor that in when doing estimates...
cheers
Jules
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Posted by ransley on October 18, 2009, 9:01 am
show/hide quoted text
> We have a couple of high efficiency, condensing gas furnaces with
> forced hot air used to heat our home.
> So far, every year at the start of the heating season, I have been
> doing the following for maintenance.
> 1. Thoroughly vacuum out the interior
> 2. Clean the condensate pump of accumulated crud
> 3. Wash the air filter (it's a simple low-end washable one)
> 4. Inspect for cracks, loose wires, funny noises, etc.
> I have a CO detector mounted near all the heaters.
> - Do I need to clean the burners, igniters, heat exchanger, etc? Or
> =A0 are they best left alone if everything is working properly
> - Is there anything else I need to be doing from a regular maintenance
> =A0 perspective?
> - Is there any need to call in an official HVAC person for
> =A0 (additional) preventive maintenance?
> Thanks
I had a friend buy a house, I dont know if it the furnace was run
without a filter or just a bad one, but the AC coil was so clogged he
was getting almost no heat. We removed the AC coil until he cleaned it
next spring. A crappy air filter can trash an AC unit. With a
condensing unit checking exaust temp should tell you alot about the
unit, I dont know what range it should run at, but to high would
indicate its not efficent. I think poor-cheap air filtration is the
quickest way to ruin a furnace and cut its efficency way down.
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Posted by RBM on October 18, 2009, 11:31 am
show/hide quoted text
> We have a couple of high efficiency, condensing gas furnaces with
> forced hot air used to heat our home.
> So far, every year at the start of the heating season, I have been
> doing the following for maintenance.
> 1. Thoroughly vacuum out the interior
> 2. Clean the condensate pump of accumulated crud
> 3. Wash the air filter (it's a simple low-end washable one)
> 4. Inspect for cracks, loose wires, funny noises, etc.
> I have a CO detector mounted near all the heaters.
> - Do I need to clean the burners, igniters, heat exchanger, etc? Or
> are they best left alone if everything is working properly
> - Is there anything else I need to be doing from a regular maintenance
> perspective?
> - Is there any need to call in an official HVAC person for
> (additional) preventive maintenance?
> Thanks
I would expect the manual that came with the unit, or goes with the unit
will answer your questions. If you don't have it, you can probably get one
online. Personally, I would never open up a condensing furnace/boiler,
unless something goes wrong
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Posted by blueman on October 26, 2009, 4:08 pm
show/hide quoted text
>> We have a couple of high efficiency, condensing gas furnaces with
>> forced hot air used to heat our home.
>> So far, every year at the start of the heating season, I have been
>> doing the following for maintenance.
>> 1. Thoroughly vacuum out the interior
>> 2. Clean the condensate pump of accumulated crud
>> 3. Wash the air filter (it's a simple low-end washable one)
>> 4. Inspect for cracks, loose wires, funny noises, etc.
>> I have a CO detector mounted near all the heaters.
>> - Do I need to clean the burners, igniters, heat exchanger, etc? Or
>> are they best left alone if everything is working properly
>> - Is there anything else I need to be doing from a regular maintenance
>> perspective?
>> - Is there any need to call in an official HVAC person for
>> (additional) preventive maintenance?
>> Thanks
> I would expect the manual that came with the unit, or goes with the unit
> will answer your questions. If you don't have it, you can probably get one
> online. Personally, I would never open up a condensing furnace/boiler,
> unless something goes wrong
Interestingly, one of our 3 units is a York and they seem to have good
quality downloadable manuals.
The other 2 units are American Standard and I can't find any manuals
online. American Standard has also yet to reply to an email request
for manuals. Note: we don't have the original since the previous homeowners
didn't pass it on.
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> add more. Then they ask about family size. A chart helps them
> determine that a family of 4 with a stove, water heater, and dryer
> will use nn gallons a month. Then their computer keeps historic
> records and they adjust accordingly.
>
> I threw them off when I added a space heater. Now they also take into
> account heating degree days & historic usage. It took them a
> couple years to get a handle on that because I use the gas heater more
> in spring and fall than the dead of winter. But now they have it
> down. I rarely go below 40% full.