Condensing Unit
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 Used Trane 3 Ton 15 SEER Air Handler and Condenser Units Central Air AC $1,380.00 Time Remaining: 2h 42m |
 Condenser Evaporator Coil Cleaner Refillable Spray Bottle Clean you AC unit DIY $8.99 Time Remaining: 25d 22h 15m Buy It Now for only: $8.99 |
 AC PAD 24X36X3 PLASTIC CONDENSING UNIT PAD 16254 $18.00 Time Remaining: 29d 11h 40m Buy It Now for only: $18.00 |
 CARRIER 5 TON INFINITY HIGH EFFICIENCY OUTDOOR AC CONDENSER UNIT $1,599.99 Time Remaining: 17d 18m Buy It Now for only: $1,599.99 |
 used GOODMAN 25 TON AIR CONDITIONER CONDENSER UNIT 13 SEER R22 houston pickup $445.00 Time Remaining: 10d 11h 9m Buy It Now for only: $445.00 |
 3 TON CENTRAL AIR CONDITIONING R 22 CONDENSING UNIT A C $995.00 Time Remaining: 11d 52m Buy It Now for only: $995.00 |
 4 TON CENTRAL AIR CONDITIONING CONDENSING UNIT A C $1,195.00 Time Remaining: 9d 9h 40m Buy It Now for only: $1,195.00 |
 A C UNIT BRYANT 4 TON CONDENSER HEAT PUMP R22 LK $850.00 Time Remaining: 28d 11h 12m Buy It Now for only: $850.00 |
 CARRIER 35T R22 10 SEER HEAT PUMP AC CONDENSER ONLY UNIT HAS R22 CHARGE $1,100.00 Time Remaining: 1d 45m Buy It Now for only: $1,100.00 |
 2 1 2 TON CENTRAL AIR CONDENSING UNIT A C $979.00 Time Remaining: 18d 1h 34m Buy It Now for only: $979.00 |
 A C UNIT LENNOX 35 TON CONDENSER R22 STRAIT COOL R22 LK $700.00 Time Remaining: 26d 22h 47m Buy It Now for only: $700.00 |
 A C UNIT BRYANT 3 TON CONDENSER 410A STRAIT COOL LK $650.00 Time Remaining: 17d 9h 14m Buy It Now for only: $650.00 |
 Brand New Mitsubishi Condensing Unit 3 Ton Condenser $450.00 Time Remaining: 27d 2h 1m Buy It Now for only: $450.00 |
 GOODMAN CONDENSING UNIT ANCHOR BRACKET ABK 20 ABK20 4 NEW $14.95 Time Remaining: 2d 7h 17m |
 Kool Wrap AC Condenser Coil Electrostatic Air Filter $29.95 Time Remaining: 24d 6h 48m Buy It Now for only: $29.95 |
 PAYNE CENTRAL AIR 3 TON CONDENSER UNIT R22 NITRO CHARGE 13 SEER NO SHIPPING $800.00 Time Remaining: 27d 2h 49m Buy It Now for only: $800.00 |
 A C UNIT TRANE 35 TON CONDENSER R22 HEAT PUMP LK $650.00 Time Remaining: 17d 9h 14m Buy It Now for only: $650.00 |
 3 Ton13SEER R410 Condensing Unit and A Coil With TXV $1,121.00 Time Remaining: 11d 2h 36m Buy It Now for only: $1,121.00 |
 A C UNIT LENNOX 35 TON CONDENSER R22 STRAIT COOL R22 LK $700.00 Time Remaining: 26d 22h 46m Buy It Now for only: $700.00 |
 4 Ton R 410A 13SEER Condensing Unit $977.00 Time Remaining: 25d 3h 4m Buy It Now for only: $977.00 |
 13 SEER 2 TON NITROGEN CHARGED R22 COMPATIBLE CONDENSER UNIT $799.99 Time Remaining: 21d 3h 18m Buy It Now for only: $799.99 |
 3 Ton R 410A 13SEER Condensing Unit $799.00 Time Remaining: 25d 2h 52m Buy It Now for only: $799.00 |
 Mitsubishi PUY A12NHA2 1 Ton R410a Condensing Unit $346.45 Time Remaining: 23d 21h 55m Buy It Now for only: $346.45 |
 13 SEER 15 TON CENTRAL AIR CONDITIONER 48000 btu CONDENSING UNIT R410A $799.99 Time Remaining: 21d 4h 51m Buy It Now for only: $799.99 |
 A C UNIT BRYANT 4 TON CONDENSER R22 STRAIT COOL LK $750.00 Time Remaining: 5d 10h 7m Buy It Now for only: $750.00 |
 Lennox Air Condenser Unit $550.00 Time Remaining: 4d 14h 4m Buy It Now for only: $650.00 |
 2 TON CENTRAL AIR CONDITIONING CONDENSING UNIT A C R 22 $875.00 Time Remaining: 13d 4h 20m Buy It Now for only: $875.00 |
 35 TON CENTRAL AIR CONDITIONING R 22 CONDENSING UNIT A C $1,085.00 Time Remaining: 24d 6h 27m Buy It Now for only: $1,085.00 |
 25 Ton13SEER R410 Condensing Unit and Evaporator Coil With TXV $997.00 Time Remaining: 26d 1h 14m Buy It Now for only: $997.00 |
 New 13 SEER R410A Air Conditioning Condensing Unit $623.00 Time Remaining: 3d 1h 10m Buy It Now for only: $623.00 |
 13 SEER AIR CONDITIONING CONDENSER 20 TON R410A UNIT $729.99 Time Remaining: 6d 11h 29m Buy It Now for only: $729.99 |
 Wall hanging bracket kit for the outdoor condenser Unit $56.00 Time Remaining: 6d 16h 35m Buy It Now for only: $56.00 |
 2 Ton R 410A 13SEER Condensing Unit $650.00 Time Remaining: 25d 2h 40m Buy It Now for only: $650.00 |
 A C UNIT GIBSON 35 TON CONDENSER HEAT PUMP R22 LK $800.00 Time Remaining: 28d 11h 11m Buy It Now for only: $800.00 |
 5 TON CENTRAL AIR CONDITIONING R 22 CONDENSING UNIT A C $1,495.00 Time Remaining: 11d 53m Buy It Now for only: $1,495.00 |
 2TWB30 Trane Heat Pump Condensing Unit R 22 Dry $1,109.00 Time Remaining: 29d 1h 46m Buy It Now for only: $1,109.00 |
 AC PAD 24X48X2 CONCRETE CONDENSING UNIT PAD 162025 $22.00 Time Remaining: 29d 11h 44m Buy It Now for only: $22.00 |
 A C UNIT LENNOX 4 TON CONDENSER R22 HEAT PUMP 2005 MOD $950.00 Time Remaining: 14d 5h 50m Buy It Now for only: $950.00 |
 Used 5 Ton Goodman Condenser Central Air AC Unit $895.00 Time Remaining: 4d 21h 9m |
 3 TON AIR CONDITIONING CONDENSING UNIT AND AIR HANDLER $1,799.00 Time Remaining: 18d 1h 40m Buy It Now for only: $1,799.00 |
 15 TON 13 SEER CENTRAL AC CONDITIONER R410A 18000 BTU CONDENSING UNIT $729.99 Time Remaining: 3d 1h 6m Buy It Now for only: $729.99 |
 York YC120C00A4AAA1 10 Ton Condensing Unit 3 60 460 Volt R410A $2,360.00 Time Remaining: 8d 4h 11m Buy It Now for only: $2,360.00 |
 YORK 40 TON A C Condensing Unit 208 230 Volt 3 Phase H1RA048J256 $1,149.99 Time Remaining: 8d 1h 42m Buy It Now for only: $1,149.99 |
 3 Ton R 410A 13SEER Mobile Home Condensing Unit Evaporator Unit Combination $1,101.00 Time Remaining: 3d 1h 54m Buy It Now for only: $1,101.00 |
 MITSUBISHI MUY A24NA 2 TON OUTDOOR MINI SPLIT SYSTEM CONDENSING UNIT R410A $712.99 Time Remaining: 21d 35m Buy It Now for only: $712.99 |
 4 TON R410A 13 SEER CENTRAL AIR SPLIT SYSTEM AC CONDENSING UNIT HEAT PUMP $1,469.99 Time Remaining: 9d 35m Buy It Now for only: $1,469.99 |
 NEW 14 SEER 3 TON AC CONDENSER CENTRAL AIR UNIT R410A $1,119.99 Time Remaining: 25d 9h 45m Buy It Now for only: $1,119.99 |
 4 Ton13SEER R410 Condensing Unit and A Coil With TXV $1,439.00 Time Remaining: 3d 7h 8m Buy It Now for only: $1,439.00 |
 15 Ton 13SEER R410A Condensing Unit Evap Cased Coil $894.00 Time Remaining: 3d 14h 9m Buy It Now for only: $894.00 |
 RINNAI RC98i CONDENSING UNIT WITH VALVES AND VENT KIT $1,459.00 Time Remaining: 2d 29m Buy It Now for only: $1,459.00 |
 GOODMAN CONDENSING UNIT ANCHOR BRACKET ABK 20 ABK20 4 NEW $14.95 Time Remaining: 6d 8h 3m |
 3 TON CENTRAL AIR CONDITIONING CONDENSING UNIT A C $1,045.00 Time Remaining: 13d 4h 26m Buy It Now for only: $1,045.00 |
 5 Ton R 410A 13SEER Condensing Unit $1,147.00 Time Remaining: 25d 3h 9m Buy It Now for only: $1,147.00 |
 2 Ton13SEER R410 Condensing Unit and Evaporator Coil With TXV $920.00 Time Remaining: 26d 1h 25m Buy It Now for only: $920.00 |
 13 SEER 35 TON CONDENSING UNIT 40K BTU AIR CONDITIONER R 4101 SPLIT SYSTEM AC $999.99 Time Remaining: 13d 12h 14m Buy It Now for only: $999.99 |
 3 Ton 13 SEER R 410A Air Conditioning Condensing Unit $832.00 Time Remaining: 23d 58m Buy It Now for only: $832.00 |
 SPLIT SYSTEM 25 TON R 410A HEAT PUMP AC AIR CONDENSING UNIT PACKAGE 10KW STRIPS $1,719.99 Time Remaining: 20d 7h 58m Buy It Now for only: $1,719.99 |
 Rinnai RC98HPi Condensing unit with Valves and Vent $1,600.00 Time Remaining: 24d 5h 45m Buy It Now for only: $1,600.00 |
 25 Ton R 410A 13SEER Mobile Home Condensing Unit Evaporator Unit Combination $1,014.00 Time Remaining: 25d 6h 52m Buy It Now for only: $1,014.00 |
 4 TON RHEEM CONDENSER UNIT 3 PHASE R 22 2008 $899.00 Time Remaining: 10d 12h 11m Buy It Now for only: $899.00 |
 2 Ton 13 SEER Heat Pump Air Conditioner Condensing Unit $845.00 Time Remaining: 3d 14h 28m Buy It Now for only: $845.00 |
 25 Ton R 410A 13SEER Condensing Unit $716.00 Time Remaining: 25d 2h 46m Buy It Now for only: $716.00 |
 35 Ton R 410A 13SEER Condensing Unit $899.00 Time Remaining: 25d 2h 58m Buy It Now for only: $899.00 |
 Used 5 Ton Lennox Condenser Central Air AC Unit $895.00 Time Remaining: 8d 8h 36m |
 MITSUBISHI MUY A15NA 1 1 4 TON OUTDOOR MINI SPLIT CONDENSING UNIT 208 230 R410A $473.99 Time Remaining: 21d 4h 20m Buy It Now for only: $473.99 |
 2 Ton 13 SEER R 410A Air Conditioning Condensing Unit $673.00 Time Remaining: 3d 1h 13m Buy It Now for only: $673.00 |
 Heir Air Conditioner 3 ton Condensing Unit 18 SEER NEW $1,850.00 Time Remaining: 17d 5h 9m Buy It Now for only: $1,850.00 |
 R 22 3 Ton 13 SEER Air Conditioning Condensing Unit $980.00 Time Remaining: 3d 8h 48m Buy It Now for only: $980.00 |
 5 Ton 13SEER R410A Condensing Unit and Evaporator Coil With TXV $1,655.00 Time Remaining: 26d 2h 2m Buy It Now for only: $1,655.00 |
 Bryant A C Condensing Unit Puron 120 SEER 35 Ton 591BN042 B $1,199.99 Time Remaining: 14d 21h 39m Buy It Now for only: $1,199.99 |
 Carrier FB4ANF060 HVAC Carrier Electric Unit and AC Condenser $1,995.00 Time Remaining: 27d 4h 49m Buy It Now for only: $1,995.00 |
 CARRIER P162 001 CONDENSING UNIT COVER 84407 $6.00 Time Remaining: 29d 4h 55m Buy It Now for only: $6.00 |
 Mitsubishi PUY A12NHA2 1 Ton R410a Condensing Unit $349.95 Time Remaining: 22d 2h 4m Buy It Now for only: $349.95 |
 R 22 25Ton 13 SEER Air Conditioning Condensing Unit $884.00 Time Remaining: 3d 14h 5m Buy It Now for only: $884.00 |
 2 TON CENTRAL AIR CONDITIONING CONDENSING UNIT A C $955.00 Time Remaining: 2d 1h 8m Buy It Now for only: $955.00 |
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Little Giant VCMA-15ULS 554405 VCMA Series Automatic Condensate Removal Pump (115 volts), 1/50 horsepower
List Price:  |
DescriptionThe company that has always been the forerunner in condensate removal pump design, introduces the new generation VCMA Series. Adding features for every installation. Fully Automatic, new generation float arm for enhanced reliability... |
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Advanced Tool Design Model ATD-3404 Condenser Fin Straightener
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DescriptionATD-3404Condenser Fin Straightener6-in-1 tool clears and straightens condenser and evaporator coil finsSpacings of 8, 9, 10, 12, 14 and 15 fpiSmall compact screwdriver type, easy to use in confined area Shipping Weight: 0... |
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Isolate It: Sorbothane Vibration Isolation Square Pad 50 Duro (.50" Thick 5" x 5") 2-Pack
Sale Price: $29.95 |
DescriptionSorbothane vibration isolator pads are versitile anti-vibration pads that can be used as feet, stops, spacers and protectors in many different applications. The unique Sorbothane urethane is a durable, resilient, polymer that provides outstanding vibration isolation and non-skid properties... |
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FRM401-CH high density 48 units of fiber optic media converter in one 19" rack chassis
List Price: |
DescriptionThe best choice for FTTH applications, FRM401-CH chassis is supporting 12 fiber cards, each having 4 identical Fast Ethernet fiber optic media converters. It also accomodates two redundant power supplies, that could be chosen as AC(110-220V) or DC (24-48V) type... |
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CDI Torque Interface Cable, RS-232 to serial printer
Sale Price: $63.85 |
DescriptionVersatile: Battery operated, light weight, with available ranges from 2-20 in-oz to 150-1500 ft-lb, and seven units of measure, in-oz, in-lb, ft-lb, Nm, dNm, mKg or cmKg. The MULTITORQTM system can be used with sockets, extensions, universal joints, ratcheting drivers or any of these combined... |
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FRM301-DC(24-56V) power supply unit for FRM301 chassis
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DescriptionFRM301-DC power unit is a switching power supply that installs in an FRM301 chassis. It automatically detects input power 18-56V for DC power type. Power units are redundant and hot swappable in the FRM301 chassis, assuring smooth operation of chassis and equipment even in the event of a power unit failure. |
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Samsung Condenser Fan Motor Assembly DA97-01949A NEW
Sale Price: $29.58 |
DescriptionSamsung Condenser Fan Motor Assembly DA97-01949A NEW |
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Encore G100 Personal GPS Navigator (Green)
List Price: |
DescriptionThis Mini GPS keychain is world's smallest personal GPS guider! it is not only a homing device which can bring you back to the original position, but also an easiest to use GPS personal location finder which guide you to your target positions... |
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Warning Watchdog Air Conditioner Alarm System
Sale Price: $325.00 |
DescriptionThe condensing unit security system that offers complete protection. Theft of residential and commercial condensing units is on the rise. A hundred dollars worth of copper could cost your customer thousands of dollars to replace the outdoor condensing unit... |
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30" X 30" Condenser Pad, 2" Poly
Sale Price: $29.36 |
DescriptionAir conditioner condenser pad. |
Condensing vs. Non-Condensing tankless water heaters
As Tankless water heaters become more popular here so are increasing choices of types and manufactures.
One term that is referred to lately is Condensing Tankless Water Heaters, so what is behind that?
As the term applies tankless water heaters don't have a water storage tank like the traditional water heaters. The water in a tankless unit is heated as it flows through its heat exchanger which is heated through combustion, more intense that your regular water heater.
In a typical combustion we burn the hydrogen content of the fuel and as the result hot gases are produced. One of these hot gases is steam or better water vapor. Now when these steam gases are cooled they turn into water that we generally refer to as condensation.
The condensation water is acidic (pH 3-5) and hence corrosive. It will corrode steel metals and other materials.
A Non-Condensing tankless water heater will push these hot gases through its vent to the outside. They will then cool down outside the unit. These gases have temperatures around 300 degrees F and must be vented through non-corrosive venting materials that can withstand the heat. Here is special stainless steel category 3 venting used, which is expensive.
In the combustion process fuel was burned and that energy was used to heat the water, although not all of it. Because the hot exhausting gases contain heating energy that is not used to heat the water and are wasted by exhausting them to the open. The hotter the exhaust gases are the less energy is used in heating the water and hence lower efficiency.
Non-condensing units have efficiencies around 80%, meaning around 20% of the heat is wasted and exhausted.
Condensing Tankless Water Heaters
Condensing Tankless Water Heaters extract the additional heat from the exhaust gases through various means and therefore exhaust cooler gases, usually around 100 degree F. As mentioned before cooling the exhaust gases produces condensation, in this case inside the unit. Since the exhaust gases are now much cooler a less expensive venting material can be used, mostly standard PVC schedule 40 is used as it can easily withstand the heat and the corrosively of the gases. Since we have captured the residual exhaust heat to heat the water we have achieved higher efficiency in the high 90% (up to 98%).
As a note, a Condensing unit does not always condensate, surrounding air temperature and air humidity are important factors. The manufacture claimed efficiencies are achieved mostly in labs under controlled conditions and real life values maybe lower. Since the exhaust gases have been cooled inside the unit the condensation water is collected now inside the unit. The heat exchanger is the heart of the tankless water heater. It has now to be of higher quality and non-corrosive material to withstand the corrosiveness, usually made of special stainless steel alloy.
The collected condensation water has to be neutralized before it can be drained to the outside. This can be done through special filtration or dilution.
Conclusively Condensing Tankless Water Heaters are very efficient (up to 98%), real energy savers and use inexpensive venting material. They are slightly more expensive to manufacture but are over all on par with non-condensing tankless water heaters that need to use expensive stainless steel venting materials and are less efficient (about 80%).
About the Author
Al Sagafi has extensive engineering and field experience in energy conservation and renewable energy production. He is actively involved at http://www.JustTankless.com and http://www.allied-solar.com. He holds California State General Building and Electrical Contractor licenses.