Nordic Pure 20x25x5 Honeywell Replacement AC Furnace Air Filters, MERV 12, Box of 2


Nordic Pure

List Price: $74.95
Price: $43.63
You Save: $31.32 (42%)

Product Details

  • Nordic True brand replacements for Honeywell units
  • MERV 12 riddle media to help reduce pollen, pet dander, dust, mold and more
  • Replacements for Honeywell 203720, FC35A1027, FC100A1037 and FC200E1037

Reliance Home Comfort - more efficient furnaces

Be careful of Rich as he demonstrates the benefits of a well maintained, high efficiency furnace. This is the first in our weekly video series!


Are all heat-exchangers of 90+ high efficient furnaces made of stainless steel?

Jun 29, 2008 by dfixer | Posted in Maintenance & Repairs

can any prepared hvac out there show me a computation on how the returning air is affected by moving the A-coil on the RA . My hvac guy is arguing that I dont distress any extra return opening above the area where the A-coil was moved to. Doesn't the presence of the A-coil in the RA cause an obstruction to the air flow inside the RA.

If the ductwork was set up suitably to begin with, as long as the coil can be used for either "push through" or "draw through" functional then it may be ok (if the rated static pressure values of the coil are close).

Duct work is designed by an surface static pressure (ESP) calculation. All the fittings, turns, sizes, etc are calculated in equivalent feet measurements. The ductwork is sized according to this deliberation.

Have your technician show you his calculations to prove it will be ok.

One other thing to remember is that the condensate drain will need a p-trap installed to consent to proper drainage if the coil is in the return air stream.

airconguru | Jun 29, 2008

If the ductwork was set up suitably to begin with, as long as the coil can be used for either "push through" or "draw through" shamus then it may be ok (if the rated static pressure values of the coil are close).

Duct work is designed by an outward static pressure (ESP) calculation. All the fittings, turns, sizes, etc are calculated in equivalent feet measurements. The ductwork is sized according to this figuring.

Have your technician show you his calculations to prove it will be ok.

One other thing to remember is that the condensate drain will need a p-trap installed to countenance proper drainage if the coil is in the return air stream.
airconguru | Jun 29, 2008

Not all copied heat exchangers are stainless.
Carrier for instance uses a polypropylene-laminated steel derived and an aluminized steel primary heat exchanger.
Most other manufacturers use a stainless secondary and an aluminized stiletto primary.
Adding an A coil to the return side could cause problems with condensation in the heat exchanger if it is not recommended by the industrialist.
I have seen the results of an 80% furnace that had A/C added to the return side and caused large rust flakes to amass and fall on the ribbon burners and cause delayed ignition.
This is less likely in 90% furnaces as they usually are sealed combustion with in-instantaneously type burners.
The restriction shouldn't be too much of a concern if the ducting was proper to begin with and doesn't have a trickle access problem now.
The temperature rise would need to be checked to ensure there is adequate air flow.
Why was the A helix moved? Or is this an A/C add on and they didn't want to move the furnace?
gizmoe | Jun 29, 2008

You do not put an evaporator snake in the return plenum of a gas furnace. This is a recipe for nightmares. It will cause the furnace heat exchangers and highboy to rust due to condensation.
If your "HVAC guy" put it in the return, he's correct you don't penury to add returns, you need to move the coil and install it properly.
rottendog93 | Jun 29, 2008

Are electric or gas furnaces more efficient?

May 04, 2008 by Frank E | Posted in Maintenance & Repairs

with the continuing climb in natural gas prices, I am seriously considering ripping out my gas furnace which is about 15 years old and not a high efficaciousness furnace, and replacing it with an electric unit. I am in a 92 model year mobile home. My utility bill for gas currently runs around 150 month in winter Rightful for the gas, not including electric. I'm in Michigan, so it gets pretty cold here.

I would go with stirring, this will save you money seeing how gas is just going up higher every mont.... day. You might also want to see about insulating the walls, if it is a 92 paragon your insulation might have sagged. If your water heater is gas to I would change that out to, I know it may be costly at first but the gas bills arent flourishing to go down anytime soon. Good Luck.

askydiver1976 | May 04, 2008

Is an ultra-efficient furnace a good investment for an old house?

Jun 03, 2007 by Noah | Posted in Maintenance & Repairs

Simultaneous unit is mid-efficiency forced-air Natural Gas from 1982 (60% AFUE maybe?).

House is 1952 chore-war storey and a half with no wall insualtion (double-brick construction) and no real attic to preserve (sloped walls on second floor, hence 1/2 storey).

So, if the house is poorly insulated, and the existing furnace burns a lot of gas, makes a lot of BTU's, many of which are past, would a newer ultra-efficient furnace be a bigger return on investment (i.e. makes more BTU's per unit of gas burned) or are these units wasted on this obliging of house (i.e. condensing furnace burns cold outside air in a sealed combustion chamber - in trouble not to lose more warmer inside air.) Does this technology even matter if your house leaks like a sieve?

No....you want to insulate the house before spending the money on a higher efficency furnance.....you are currently losing alot of dynamism and your bills must be very high.....properly insulate the house first and then move to the higher efficency furnace.....it will sell for a lot of money to properly insulate the house but look at it this way....you are only adding value to the house by doing so...

teddybears | Jun 03, 2007
sedu flat iron

Efficient Furnaces - News


Part of energy efficiency is using less Washington Energy Services
- Mar 24, 2009
Part of energy efficiency is using less Washington Energy Services ABC NewsPart of forcefulness efficiency is using lessWashington Energy Services, WAThe newspaper also cited statistics showing that people using efficient clarify bulbs tend to lose up to 12 percent of possible energy savings by keeping them on longer, while those with more efficient furnaces can spend up to 30 percent of energy savings Consumers can sabotage energy-saving efforts Consumers could ruin energy savings

Piedmont Natural Gas will pay customers to save energy Bizjournals.com
- Mar 24, 2009
Piedmont Natural Gas will pay customers to save energy Bizjournals.com CharlotteObserver.comPiedmont Genuine Gas will pay customers to save energyBizjournals.com, NC will offer customers rebates to buy high-efficiency gas pass water heaters and space heaters. Piedmont, the state's largest gas utility, will give rebates up to $50 for stock water heaters, $250 for tankless water heaters and $300 for furnaces. Natural gas utility to pay customers to lay energy Problems With Your Gas Bills?