Tuesday, July 22, 2014

Whole House Fans and Attic Fans

Whole House Fans, Attic Fans and Solar Attic Fans from Qmark Marley, Quiet Cool, Tamarack and HNSF. Whole House Fans and Whole House Attic Fans are a great way to keep your house cooler and save on Air Conditioner Bills.

Whole House Fans pulls heat out of your home and attic bringing in cooler outside air. Save up to 30% on your a/c bills
 
Quiet Cool Whole House Fans are designed to cool and vent your entire home by pulling warm up and out while drawing fresh cool air in.
 
Qmark Attic Fans - Marley Roof Mounted Attic Exhaust Fans in 120 Volt Electric
 
HNSF Solar Attic Fan - 20 Watts Adjustable Solar Pane. Solar Powered Attic Cooling Fans
 
Qmark Gable Attic Fans - Marley Gable Mounted Attic Exhaust Fans in 120 Volt Electric.
 
Eco-Breeze Fresh Air Cooling System - Window Unit - Eco-Breeze using Mother Nature to cool your rooms
 
Eco-friendly sun with Attci Fans that install on the Roof and Gable. You can easily, quickly and economically use the power of the sun to reduce attic heat.
 
Qmark Gable Attic Fans - Marley Gable Mounted Attic Exhaust Fans in 120 Volt Electric
 
Please call Sales at www.houseneeds.com if you have any questions about the above products at 866-432-8123.
 

Thursday, July 17, 2014

New Construction and PEX Radiant Heat FAQ's

1. What do I need?
To properly size most components related to your under floor heating system we highly recommend a heat loss calculation for your project if this is your primary heat source. Why? Heat loss is a critical step, as we can estimate the average output of a radiant floor at 25 to 35 BTU’s per square foot but windows, doors, insulation, and degree days all make a major impact on getting you just what you need.
The most common sizing mistake with in floor heat is in oversizing. This not only makes the new radiant heating system cost more to install, but also forces it to operate inefficiently, break down more often, and cost more to operate. Oversized heating equipment also often creates uncomfortable and large temperature swings in the house plus it will short cycle the hot water boiler and run outside the design parameters costing you more money.
We are not in the business of selling equipment that you don’t need and a little work up front can save you thousands of dollars in costs over the life of your system.

2. How do I calculate my heat loss?
Have your architect or builder supply it to you as in many states like NH or CA it is required.  Calculate it yourself using software - go back to the Heat Lost Calucator under Pex Tubing Radiant Installs. Or use one of the two different rough guides below.
Insulation Type and Climate Zone
(Please Note: We highly recommend that you do a heat loss calculation and provide the information below as a starting place)
 1)  No insulation in walls, ceilings, or floors; no storm windows; windows and doors fit loosely .... 60 to 100 BTU's per Sq. Ft.
2)  R-11 insulation in walls and ceilings; no insulation in floors over crawl spaces; no storm windows; doors and windows fit fairly tight .... 50 to 60 BTU's per Sq. Ft.
3)  R-19 insulation in walls, R-30 in ceilings, and R-11 in floors; tight-fitting storm windows or double pane windows .... 29 to 35 BTU's per Sq. Ft.
4)  "Energy Star Rated" house with R-24+ wall insulation, R-40 in ceilings, and R-19 in floor; tight-fitting storm windows or double pane windows; vapor barrier sealed carefully during construction .... 20 to 25 BTU's per Sq. Ft.
5)  SIP or Earth-sheltered house with little exposure; argon filled windows, and R40+ insulated .... 10 to 15 BTU's per Sq. Feet.

Climate Zone
Heating Sq. Footage by Climate Zone for a pre-1970's House
Houston, TX ZONE 1 --> 15 - 25 Btu's per square foot
Los Angles, CA ZONE 2 --> 25 - 30 Btu's per square foot
St. Louis, MO ZONE 3 --> 30 - 40 Btu's per square foot
New York, NY ZONE 4 --> 40 - 50 Btu's per square foot
Minneapolis, MN ZONE 4 --> 50 - 60 Btu's per square foot

Outdoor Design Temperature
The Outdoor Design Temperature (ODT), also referred to as the 2.5% design day temperature, is not the coldest day ever, but rather a temperature that is achieved 97.5% of the time.
Examples:
ODT Chicago = - 8 Degree F
ODT Denver = 1 Degree F
ODT Minnesota = -12 Degree F
ODT Washington = 17Degree F
Simply multiply the appropriate factor above by your home's total heated square footage to arrive at your approximate required heating capacity. For example, if you live in Zone 3, your home is well insulated, and you have 2000 heated square feet, the equation will look like this:
 2000 square feet of "Energy Star" grade new construction but with lots of windows = 35 BTU's per sq ft. is 70,000 Btu Load
Then, to calculate the output on a hot water boiler, multiply its efficiency rating by its listed input rating for the actual Btu output of heat. An example of a medium efficiency boiler. Of course, this is a very simple way to look at efficiency - but actually, it is more complicated. Factors such as, how long does it take to get to efficiency, condensing, direct vent or not, using pex and amound of water in the boiler all effect true efficiency.
87,000 Btu input X .86 efficiency = 73,000 Btu actual output

3. Existing Heating System
All hot water boilers sold in the U.S. must have a rating plate. Check the rating plate and get the:
1) For Example --> 92,000 Btu Input of your Hot Water Boiler X .80 efficiency of your Boiler = 73,000 Btu actual output
2) Count the total linear footage of baseboard in the home. Multiply this number by 600 BTU’s. This will give you the BTU output at 180 Degrees F. This number should be close to the Boilers actual output.
There are a few ways to calculate heat loss. Use the above information to get a rough idea. We strongly recommend that you download a heat loss calculator. Why? Because windows and doors make a huge difference to the heat load of your home. Once you have an idea of your requirements, we will be able to get you a quote.

4. Ways to install Radiant PEX with an existing floor
PEX Tubing Under the Floor - Typically under hardwood or tile flooring
PEX In Floor - Typlically in poured cement
PEX Over Floor - Typlically using ThermalBoard, VersaTherm or Creatherm Radiant Heat Mass

5. Radiant Slab on Grade
For residential slabs we recommend 1/2 Inch PEX tubing to be 12 Inch on center. Along walls with lots of glass or high heat loss the PEX should be 6 Inch to 9 Inch on center on the outside walls for the first 2 feet, and 12 Inch on center everywhere else.

When figuring the over all length of tubing you will need you divide any 6 Inch spacing area by .5, divide any 9 Inch spacing area by .75 and any 12" spacing area by 1. This will give you the over all length of the PEX needed in the slab. You will need to add the length of tubing needed to get up to the pex manifold.

Typically pex manifolds are mounted 18 Inch to 24 Inch off the slab.

6. Installing PEX Tubing
Following good piping practices the maximum length of each 1/2 Inch PEX tubing runs should be no longer than 300 feet (300-foot maximum is code in many places). When the pipe loops exceed 300 feet you need to use larger circulators (pumps) to maintain this temperature drop. With larger circulators initial cost is higher and they usually require twice as much electricity to run. Most good radiant installers try to limit piping loops to below 300 feet.

There are many correct ways of installing in floor heat PEX within a slab. The best way is tying the PEX to the reinforcing mesh or rebar. When attaching the PEX Tubing to wire reinforcing mesh or rebar it is recommend that a zip tie be used every 2 feet of PEX Tubing.

Another way to install PEX in a slab is attaching the PEX Tubing to ridged insulation. The use of insulation screw clips or large plastic staples is common.

We recommend an insulation screw clip or staple every 2 feet if installing the tubing over insulation only (no wire mesh). If you use 2 Inch polystyrene insulation it is recommended that you use a 6 mil. polyethylene moisture barrier.

Installing the manifolds and keeping the lines under pressure (air or water pressure) for the concrete pour is highly recommended and required by code in many locations.

7. Insulation
Insulation is always needed with any radiant heating system and especially needed under slabs. Why, if the soil has any moisture in it the moisture will wick away the heat at a tremendous rate making your system inefficient.

Today many radiant slabs being installed with insulation only around the perimeter. Their belief is that you should store the heat in the ground for use later. One problem with this notion is that a large portion of the heat is absorbed into the ground and never warms your home. Why do you want to pay to heat the ground? Slab Insulation is important for the entire slab.

We recommend Slab Shield Insulation which was designed specifically for under slab applications. Manufactured using two separate layers of 1/4 Inch polyethylene foam with a pure aluminum center. This product is available in 4 Feet x 63 Feet rolls for easy application. It is simply unrolled and taped together (this is necessary for a complete vapor barrier to be achieved). With Slab-Shield there's no time wasted installing 4 Feet x 8 Feet foam boards. With a puncture resistance of 92.9psi you can work and walk on top of it without it crumbling apart.

8. Here's a rough idea of what it will cost
Below are some pricing guidelines. These numbers are higher than most proposals, but can act as a "stand-in" as you're creating your construction budget.

Mid Efficiency (87%+) hot water boiler: $1,500 to $3,000
High Efficiency (95%+) hot water boiler: $2,200 to $5,500
Per zone controls: $250.00 ea. zone
Slab on grade Radiant: $1.20 per square
Wood Underfloor Radiant: $1.70 Per square
Myson radiators: $260 per 5000 BTU
People consider radiant heating for its superior economic and comfort advantages. But with energy prices rising 35%+ this year, whichever efficient system you choose, you’ll appreciate the cost savings!

To view Houseneeds products follow this link:
http://www.houseneeds.com/heating

Thursday, July 10, 2014

How to Size Copper Tees for Hydronic Heating Systems

Tees are generally measured from the "Run" to the "Bull".

The "Run" is the left-to-right or the length of the Tee.

The "Bull" is the top part of the Tee.

For example if a Tee is 3/4" X 3/4" X 1/2", then the left inside diameter is 3/4", the right inside diameter is 3/4" and the top inside diameter part is 1/2". Tees where the run and the bull are not uniform are referred to as "Reducing Tees".

How to Size Copper Tees for Hydronic Heating Systems
Click on the product links below to view sale items:
  • Monoflow Tees
  • Copper Tees
  • 45° Copper Elbows
  • 90° Copper Elbows
  • Copper Couplings
  • End Caps
  • Sharkbite Lead Free
  • Copper Adapters
  • Boiler Drains
  • Baseboard Tees
  • Brass Fittings
  • Tuesday, June 10, 2014

    Eco Breeze the Humidity and Temperature Solution

    Whole-house fans were mainly popularized in the United States through the 1950s-60s as an inexpensive method to cool homes. A whole house fan uses fresh air ventilation cooling which is simple and much lower in cost than air conditioning cooling. The fan cools the house by drawing cool outdoor air inside through open windows and exhausting hot indoor air through the attic to the outside. As the outdoor temperature drops in the evening, the windows are opened and the fan is turned on. In the morning the process is reversed. The fan is turned off and the windows are closed, trapping cool air in the home and sealing out the hot day time air. Since the 1950’s, whole-house fans have been improved with insulated vent doors, quieter fans and motors, and remote controls but the fundamental manual cooling process of opening and closing of windows remains unchanged.

    Eco Breeze – The Paradigm shift
    Eco Breeze provides the same low cost fresh air ventilation cooling in a completely different way. The result is reduced fan noise, convenient operation, lower installation cost, and improved comfort.

    Monitors outside temperature and humidity – No more humid air
    High humidity makes us uncomfortable and makes air conditioners work harder to remove moisture. Eco Breeze monitors outdoor humidity and only provides fresh air cooling when the outside air is dry and cool.

    Individual room cooling – Quiet operation
    Eco Breeze is designed to cool individual rooms rather than the whole-house. This produces the same air tangential fanchanges as a whole house fan yet requires a fraction of the air flow. The lower air flow and the use of tangential blowers makes the unit significantly quieter than a whole-house fan. The fan power is also a fraction of a whole house fan resulting in energy savings even when multiple fans are installed in a home.

    Simple Installation – No holes to the attic – No Installation cost
    The Eco Breeze installation is simple and can be done in minutes. It installs in a window and does not require cutting holes to access an attic, the addition of attic ventilation openings or the addition of electrical wiring.

    Automated Operation – No windows to open and close
    Eco Breeze exhausts the hot air to the outdoors and also brings the cool air into a room. The louvers automatically open to provide cooling and automatically close to seal the cool air inside ending the daily routine of opening and closing windows.

    Seamless integration with air conditioning – No need to turn off the air conditioner
    Eco Breeze monitors the indoor temperature and humidity and will only bring in the outside air if it is lower in temperature and humidity. The air conditioner thermostat will sense the cooler air and keep the air conditioner off.

    Optimum use of Fresh Air Cooling – No more guessing
    Eco Breeze has a dynamic temperature and humidity sensing system that automatically uses outside fresh air for cooling any time that it is available. In midsummer fresh air cooling may be available for a few hours a day in the late night and early morning in even the hottest regions. Eco Breeze will automatically save money even when you are sleeping. In the other seasons, Eco Breeze can operate mornings, evenings, and nights, and sometimes sizeable parts of the daytime.

    Rain Guard System – No wet floors
    Eco Breeze has a unique rain guard to prevent rain from blowing into your room even when it is operating. This completely eliminates the hassle of closing windows during rain storms.
    Eco-Breeze Fresh Air Cooling System - Window Unit - Eco-Breeze installed view from inside
     
    For further information please call 866-432-8123 or click on the below link:

    Thursday, May 22, 2014

    How To Solder Copper Pipes

    Caution: Please read and understand all safety information before attempting maintenance or repairs. Wear eye protection and gloves when soldering pipes and when working with flux. Flux is a toxic substance. Some equipment may rely on a cold water supply. Take appropriate steps to shut down any equipment that may be adversely affected by shutting off the water supply. Such equipment includes, but is not limited to, a boiler or other heating system.

    Note: Because you are working with a flame, often in a confined space, be aware of flammable materials near where you are working. In some cases, you may need to set up a non-flammable heat shield between the solder joint and flammable material nearby. Check with your local authority for applicable codes about the work you wish to perform and the necessity of permits before you begin your project.

    When copper pipes are fitted together, there is a very small gap between the two pieces. When the pipes are heated, and solder is touched to the pipes, the solder melts and is drawn up into the gap through capillary action. Once the gap is filled, and the heat removed, the solder forms a seal and makes a watertight joint. Soldering pipes is easy once you get the hang of it. The key is to recognize that you are heating the pipes, not the solder. The heated copper melts the solder. Follow the steps in this guide and you should be able to make watertight joints. It is recommended that you practice a few times on some spare parts until you feel confident.

    
    Step 1
    Step 1 - Remove all burrs from the inside and outside edges of the pipe with a de-burring brush.  Small burrs can result in a variety of problems in the lifespan of the water supply system.
    Step 2 - Clean the outside of the pipe. If the copper is not clean, the solder may not bond properly  Clean the outside of the copper pipe to a brilliant shine with a copper pipe cleaning brush, or simply use steel wool or emery cloth. If the copper is not clean, the solder may not bond properly and the joint may leak.
    Step 3 -Clean the inside of the female fitting
    Step 4 -Clean the inside of the female fitting in the same way as in step
    Step 2
    Step 5 - Apply acid-free flux to both the outside of the male fitting and the inside of the female fittin
    Step 6 - Apply acid-free flux to both the outside of the male fitting and the inside of the female fitting. Flux further cleans the copper plus helps to prevent oxidation as the pipe heats up. If the pipe becomes oxidized, the joint may leak.
    Step 7 - Join the two pieces securely together Join the two pieces securely together. Unroll about four inches of solder and straighten it. You will use the roll or container as a handle when applying the solder. Light the torch and apply the flame to the joint. Move the flame around to ensure that you heat the pipe on the opposite side from you.
    
    
    Step 3 Clean the inside of fitting in the same way as in Step 1
     
     
    
    Step 8 - When the flux begins to bubble and spit, touch the tip of the solder to the joint Once the joint will take no more solder it will build up outside of the joint and begin to drip. Care should be taken at this point. Disrupting a joint as it cools can result in a dry joint also known as a leak. Once the joint has hardened, it can be wiped. This is the part where experience/practice helps. Some people use a dry rag, so the joint can be cleaned, but not cooled to the point, where it creates a dry/leaky.
    
    Join the two pieces securely together
    Step 5
    
    
    
    
    Step 4

    
    
    When the flux begins to bubble and spit, touch the tip of the solder to the joint
    Step 6

    







    NOTES:
    1)  Always check for leaks after the pipe has cooled.
    2)  If you overheat the copper, it will oxidize and that prevents the solder from bonding.
    3)  If the joint leaks, you must open the joint, remove all the solder and start over by cleaning the metal and applying flux. It may be easier to start over with new fittings.
    4)  Always use lead-free solder.
    5)  Make sure the pipes are completely dry or it will interfere with the bonding of the solder.
    6)  If you cannot completely stop the flow of water from the pipe you are working on, it may be impossible to heat the pipe hot enough. Take a wad of white bread (without the crust) and stuff it into the pipe. This will hold the water back for a minute or two. After that the bread will dissolve harmlessly in the pipe and is easily flushed out.
    7)  Specialty parts may have requirements to disassemble seals or other components. Please read all instructions from each manufacturer.
    8)  When sweating ball valves, it is best to point the flame away from the piece, sweating the ball valve as quick as possible.
    If you use MAPP gas instead of propane, it burns much hotter and will heat the copper very quickly compared to propane. If you are used to propane, practice with MAPP before beginning work.

    Please visit www.houseneeds.com for fittings
     

    
    
     




    Tuesday, May 20, 2014

    Tamarack Technologies Whole House Fan

    Currently on sale while supplies last
     
    By pulling heat out of your home with the Tamarack TTi-HV1600 Whole House Fan, cooler outside air is drawn into the home. The heated air is then pushed out of your home through the attic vents. With a Tamarack Attic Fan - not only will you be more comfortable - but you will save money on your air conditioning bills.
    ·  Easy Installation                                     
    ·  Energy Efficient
    · Automatic                              
    ·  Quiet
    ·  Economical
    ·  Draft Proof
    ·  No Maintenance
    ·  UL/CUL Listed
    ·  Three Year Warranty
    ·  Made in the USA 
    Comes with automatic insulated motorized doors. Standard R Value is R 38 for models TTi-HV1600. The doors form an air tight seal between your ceiling and your attic. No BIG un-insulated hole in your ceiling like other traditional whole house fans!

    HV Whole House Sizing Chart
    Standard 1 or 2 Story Home with summertime temperatures no warmer than 85 degrees F. summertime peak.
    Up to 2,500 square feet  use 1  - TTi-HV1600 
    2,500 to 3,000 square feet  use 1 - TTi-HV1600  3,000 to
    4,000 square feet  use 2 -  TTi-HV1600 or 2 - TTi-HV1600 
    4,000 to 5,000 square feet  use 3 - TTi-HV1600 or 2 -  TTi-HV1600   
     
    Standard 1 or 2 Story Home with summertime temperatures no warmer than 95 degrees F. summertime peak.
    Up to 1,500 square feet  use  1 -  TTi-HV1600 
    1,500 to 2,500 square feet  use  1 - TTi-HV1600 
    2,500 to 4,000 square feet  use  2 TTi-HV1600 or use 2 -  TTi-HV1600 
    4,000 to 5,000 square feet  use  3  TTi-HV1600
     
    Please call us at 866-432-8123 or 802-583-2726 if you have any questions or if you would to place an order or visit our website at www.houseneeds.com.
     
    

    

    Thursday, May 8, 2014

    Takagi Tankless Water Heater Outdoor Units

     The flow rate and capacity of tankless water heaters depends on the temperature difference between the desired output and the incoming water temperatures. The condensing units are more energy efficient.

    The Takagi T-KJr2-OS heater is the smallest gas water heater in the Takagi tankless line and is the same as the T-KJr-IN, but for outdoor installation only (Moderate temperature climates). The T-KJr-OS has gas inputs up to 140,000 BTU per hour - can meet all the hot-water needs of a small American home or apartment with one or two bathrooms. The T-K Jr2 OS has an energy factor of 81% to 83%. At an average (rise in temperature) of 60 Degrees F in warmer areas where the winter ground water is 60 Degrees F and with the output set at 120 Degrees F the unit will provide 3.8 GPM, or 228 GPH. The All new T-KJr2-OS has a max GPM of 6.6GPM.

    The Takagi T-K4-OS is a mid-sized gas water heater in the Takagi tankless line and is the same as the T-K4-IN, but for outdoor installation only (Moderate temperature climates). The T-K4-OS has gas inputs up to 190,000 BTU per hour - can meet all the hot-water needs of your home, business or condo with one or two bathrooms. The T-K 4 OS has an energy factor of 81% to 83%. At an average (rise in temperature) of 60°F in warmer areas - where the winter ground water is 60°F and with the output set at 120°F - the unit will provide 5.2 GPM. The All new T-K4-OS has a max GPM of 8.0 gmp.

    The Takagi T-D2-OS model was specifically designed for light commercial applications in outdoor locations. The Takagi Tankless Water Heater T-D2-OS offers a max flow rate of 10.0 GPM. The four preset temperatures on the unit are: 104°F, 113°F, 122°F, 131°F, 140°F, 158°F, 176°F and 185°F. To achieve any temperatures other than those presets, you will require the TK-RE30 temperature controller, which is included with the T-D2-OS.

    The Takagi T-H3-OS is a high efficient, condensing tankless water heater perfect for residential and light commercial applications. With gas inputs of 199,000 BTU, the T-H3-OS-P can produce enough hot water for four bathrooms in warmer climates or three baths in colder climates. Primary heat exchanger utilizes HRS35 commercial-grade copper alloy for 25 times better heat transfer than stainless steel. Secondary heat exchanger utilizes 316L stainless steel for better corrosion resistance.  Outdoor model includes remote control as standard feature

    The Takagi T-H3S-OS is a high efficient, condensing, tankless water heater perfect for residential applications. With gas inputs of 180,000 BTU, the T-H3S-OS can produce enough hot water for three bathrooms in warmer climates or two baths in colder climates.  Primary heat exchanger utilizes HRS35 commercial-grade copper alloy for 25 times better heat transfer than stainless steel. Secondary heat exchanger utilizes 316L stainless steel for better corrosion resistance.  Outdoor model includes remote control as standard feature

    The Takagi T-H3J  is a high efficient, condensing tankless water heater perfect for residential applications. With gas inputs of 160,000 BTU, the T-H3J can produce enough hot water for two bathrooms in warmer climates or 1.5 baths in colder climates.

    To compare products click here.

    Please note Takagi Outdoor units are to be installed in mild climates only or for summer use only in colder climates.

    Please call us if you have any further questions at 866-432-8123 or 802-583-2726.