HIGH HUMIDITY 60 % +. Within the last month, I moved into a new house. It has dry walls and not plaster walls. The furnace and hot water tank were installed a week or so before we moved in to the house. Last week we determined that there is a humidity issue when the windows were sweating. We are trying to determine the source of the humidity. The contractor feels it may be the high efficiency furnace. I have a Lennox g61mp. The combustion air is pulled from within the un finished basement. Should the air be pulled from the outside? The gases are vented via PVC pipe which slopes back to the furnace.
Could the furnace be causing the humidity problem? If yes, what could be causing the humidity problem? The installer said it is not the furnace.
Maintaining the proper humidity levels in the home is important not only for health (as indicated on High Performance HVAC Humidifiers Page) but also for the wood products in the home including doors and windows. The quick answer to your question about the furnace causing the humidity problems is no. Gas furnaces and other heating appliances tend to dehumidify the air and do not create any more humidification. I wonder where your supply vents are located and are they directed to blow hot air towards the windows? Condensation is created when the temperature of air is colder than the dew point. A prime place for this to occur is windows and doors. This is part of the reason why many supply vents for forced air systems, and radiators for hot water systems, are placed near windows and doors. It keeps the windows warmer and above the dew point and also makes the air warm from your heat loss near these locations.
Lennox G61MP Gas Furnace
The furnace you describe, the Lennox G61MP, is a condensing furnace and having the combustion air intake in the basement actually contributes to removing humidity from the basement. It sucks the air from the basement for use in the combustion process and the humidity in this air is condensed during the combustion process in the heat exchanger. This condensation is gotten rid of down a condensation drain near the furnace or blown out the exhaust where the combustion gases are expelled. If your supply vents are located near the doors and windows and you still have this problem then it may be time for new doors and windows as you have too much heat loss at these places and all the humidity is being condensed around the windows in your home.
Home Humidity Problems Maintaining Proper Home Humidity
10 SEER units cannot be purchased in the US any longer. The new standard as mandated by the Department of Energy as of January 2006 is 13 SEER. This 30 percent increase in efficiency from 10 SEER requires a change out of the inside coil. In 2011 the Senate is proposing a new SEER and AFUE standard that will be based on where you reside in the USA. The country will be split up into three regions. Northern, Southern, and the Southwestern regions with each region having different efficiency standards. The proposed efficiency standards for each region are as follows: Continue reading “2011 Proposed Increase in SEER – EER – AFUE – HSPF” »
I did not see any reference to my question and would appreciate a response as soon as possible, as due to medical situation, have to make a decision soon. We own an OLD house with 13′ ceilings in a large part of the home and 11″ ceilings in the LV/DR and BR. We are oscillating on where to place the ducts….Floor or ceiling. It appears to be counterproductive to me to put the duct work in the ceiling since it will have so far to go. We are looking for the most cost effective, not upfront cost but operating cost, solution. In addition, we are considering DF heat pumps. The house will need 2 or 3 to be zoned correctly. Please let me know about the duct placement and thank you for your help? Continue reading “Duct Work and High Ceilings” »
Modern gas furnaces use electronic ignition systems to light the burners in modern furnaces. One can still purchase a gas furnace or water heater with the old standing pilot ignition systems which have been proven reliable and safe over time but why would someone want to purchase a gas furnace or water with a standing pilot ignition system rather than purchase a gas furnace or water heater with an electronic ignition system? Let’s define the two different types of gas furnace or water heater ignition systems and then we will surmise based on that why someone would purchase a standing pilot gas ignition system over an electronic ignition system.
Gas furnace ignition controls vary from furnace manufacturer to furnace manufacturer. Some are proprietary and some are from an engineering company which specializes in gas furnace ignition controls. Honeywell being a major manufacturer of controls for HVAC also makes several gas furnace ignition controls. Gas furnace ignition controls have advanced by leaps and bounds over the last 20 years coming from the norm which was standing pilot ignition all the way to solid state ignition controls which exist today and are safer and more efficient than the gas furnace ignition controls of yesteryear. Aside from a few companies which lag behind in technology for whatever reason to some water heater manufacturers who continue to adhere to the old standing pilot ignition controls the new modern systems offer safety and efficiency in all their gas furnace controls. Honeywell was the pioneer as they are with much of the modern HVAC technology and Lennox and Carrier came in just behind Honeywell with advancements in engineering of gas furnace ignition controls that changed the entire HVAC gas furnace industry.
Unit heaters are used in various places to protect equipment and provide comfort to occupants. This hot water unit heater provides protection for a mechanical room where there is a large air handler and other associated equipment in the mechanical room. This hot water unit is controlled by DDC. A thermostat on the wall detects the temperature of the mechanical room. The DDC system will maintain a temperature set point by energizing the hot water unit heater fan and modulating the hot water valve open on the hot water piping. The actuator and hot water valve can be seen in this photo on the right lower half of the hot water unit heater. The valve is a two position valve so it is either open or closed with no modulating the valve on the unit heater. Other unit heaters for heating mechanical rooms or providing comfort include electric units heater when hot water is unavailable, gas fired unit heaters when gas (either propaneor natural gas) is available, and infrared unit heaters typically found in large garages or warehouses for basic comfort of workers in those spaces. There are also steam unit heaters that utilize steam and a steam coil for heating spaces where steam is available. Most unit heaters are forced air unit
So you have made a choice to replace the thermostat in your home or business and you decided to do it yourself. Hopefully you will follow the advice on this website and read the instructions before replacing the thermostat. It is recommended if you do not know what you are doing or having any doubt what-so-ever then please consult a professional. One of the biggest issues with replacing your thermostat is selecting the proper thermostat. This will depend on the air conditioning and heating system which you have installed in your home. By and large most thermostats are low voltage thermostats however there are line voltage thermostats, Millivolt thermostats, and other proprietary solid state thermostats that come with many mini-split or ductless systems. Other selection factors include selecting a programmable thermostat, non-programmable thermostat, and digital or mechanical thermostat. You need to first figure what kind of air conditioning and heating equipment you have before selecting the proper thermostat. In some cases selecting the proper thermostat will require some technical knowledge concerning low voltage thermostat circuits.
We get emails on a regular basis asking us about prices for a new air conditioner, heat pump system, boilers, and other types of HVAC systems. This article addresses those questions and why it is nearly impossible to give anyone an estimate for a new system through email or forum without first looking at the house and other factors involved with giving someone a price. Continue reading “Pricing New Air Conditioner Cost Price for New Heat Pump” »
My furnace is leaking water and it is summer time so I am not using it for heat except for the blower fan which is hooked up for the air conditioner and the heat. I know the pipes from the outside units run into a box on top of the furnace so I think that is a part of the air conditioner. What can I do to fix the problem if you know what the problem is by my explanation here?
Gas Furnace with Hot Surface Ignition – Burner Compartment
Whenever we talk about electronic ignition systems we must first look at the key components which make these systems work and understand how they work. Hot surface ignition systems work in various ways depending on what the electronic ignition manufacturer and design engineer determined in the design. Some are direct main burner ignition while others light a pilot and the pilot lights the main burners. A vast majority of hot surface ignition systems light the main burners directly without using a pilot light. This is a simpler form of using a hot surface igniter to light a pilot light and then have the pilot light the main burner. There are fewer parts to worry about and therefore less mechanical things which can break down or go wrong to worry about in a direct main burner ignition system.