How To Add AC To My Existing Furnace? A Complete Guide

Factors to Consider Before Adding AC to Your Existing Furnace


To get central air conditioning for your home, you need to add an AC unit to your existing furnace. However, there are several factors to consider before you make any decisions. In order to make this process easier, I would like to introduce you to several sub-sections that could help you. They are Site Survey to Understand Your Home’s Cooling Needs, Understanding Your Existing Air Heating System and Wiring, Deciding on the Desired Cooling Capacity, and Checking the Condition of Ductwork and Insulation. These sub-sections can help you choose the right AC unit for your home.

How To Add AC To My Existing Furnace

Site Survey to Understand Your Home’s Cooling Needs

To figure out the cooling requirements of your home, the first step is to inspect it. The table below has all the details you need to make the right decision:

Key FactorsDescription
Square FootagArea to be cooled, measured in square feet.
Ceiling HeightHeight from floor to ceiling.
Number of FloorsQuantity of floors or levels inside a building
Insulation LeveEffectiveness of insulation material, expressed as R-values

Know these factors to get the best outcome. Getting an air conditioning system that meets your needs is also important. To do this, Energy.gov suggests getting a reliable HVAC contractor to evaluate the existing heating and cooling equipment and duct performance. Also, get to know your wiring, because electrical shocks are not fun when installing AC.

Understanding Your Existing Air Heating System and Wiring

Before adding AC, consider your current air heating system and wiring. Check compatibility and electrical demands. Inspect HVAC ductwork for optimal performance with a new AC unit. Ensure your furnace has space for AC without compromising its function. All wiring must be up-to-code and properly grounded.

Analyze existing system for upgrades or repairs. This can help predict future maintenance costs. Neglecting these factors could lead to poor HVAC efficiency, reduced lifespan, and costly repairs. Consult an HVAC technician before making any decisions. Don’t overdo it with cooling capacity – don’t try to recreate a meat locker!

Deciding on the Desired Cooling Capacity

For top-notch cooling efficiency, decide what capacity you need before adding AC to your current furnace system. Climate, house size, infiltration rate and insulation levels are key elements that influence capacity. To get the precise desired cooling capacity, look into any special factors that apply to your home, such as sun exposure and number of occupants.

Pro Tip: Get the help of a professional HVAC contractor to assess your house and give the smartest and most efficient cooling answer. Don’t forget to check your ducts and insulation – it’s no fun, but you’ll be sorry if you don’t!

Checking the Condition of Ductwork and Insulation

Evaluating Your Ductwork and Insulation

It is critical to evaluate your ductwork and insulation if you wish to install AC to your existing furnace. A good assessment of these components will help you establish if they can handle the extra load AC puts on the system.

Here’s a 5-step guide to assess your ductwork and insulation:

  1. Switch off the power: Before examining, turn off the power supply for safety.
  2. Check for leaks: Look out for any splits or holes in your ducts. Damaged seals can lessen energy efficiency and harm indoor air quality.
  3. Examine insulation quality: Make sure you have suitable insulation levels according to climate zones.
  4. Investigate specific issues: If prior issues remain, check the HVAC’s ductwork distribution system. This assists in finding blockages, restrictions or any problems that cause air resistance.
  5. Keep ducts clean: Cleaning regularly is key to having clean indoor air. If dirt blocks air passages in between inspections, it may lead to unhealthy air, higher bills, and health issues for people at home.

It is always best to ask a professional for advice before doing this assessment. Technicians can identify even complex problems and provide a report.

Tip: Don’t ignore even minor damages like loose seams or fractures in ducts during assessment because this damage can increase electricity costs until it is fixed in future maintenance. Now you can choose an AC option that will make you forget all about sweat.

Available AC Options for Your Existing Furnace


To add air conditioning to your existing furnace system with options such as central air conditioning, ductless mini-split systems, and window AC units, you need to consider several factors, including the size and capacity of your home, the level of insulation, and the total operating costs. In this section, we’ll take a closer look at the available AC options for your existing furnace, including the pros and cons of each option and what factors to keep in mind when choosing the right unit for your home.

Central Air Conditioning

Central AC in your household HVAC? A must-have amenity on hot summer days! It’s more efficient than window ACs, cooling the entire house evenly and quietly.

Adding Central AC to your setup? Relatively inexpensive! You’ve got three options: retrofitting the existing furnace unit with components like evaporator coils and refrigerant lines, attaching a coil to the plenum of your furnace, or installing an outdoor condenser with an indoor air handler.

Multi-speed blower motor? Enhances AC performance! Reduces noise and regulates airflow according to cooling demands.

Central Air Conditioning? Elevates indoor comfort levels! Energy Star estimates a 3-5% energy reduction from room ACs per year. Who needs a significant other when you can snuggle up with a ductless mini-split system?

Ductless Mini-Split Systems

Ductless Cooling Systems? No ductwork needed! That means they can be installed quickly and customized to fit your home. Plus, they’re energy-efficient and simple to operate.

Let’s check out their features! The indoor unit and outdoor condenser are the two main components. The table shows what they can do:

FeaturesIndoor unitOutdoor condensor
Cooling capacity9,000 – 36,000 BTUSame as Indoor Unit
Heating Capacity9,000 – 36,000 BTUSame as Indoor Unit
Zone controlYesYes

It’s a good idea to talk to a specialist when deciding on the right size for your home. And don’t forget to clean the air filters regularly for optimal airflow. Licensed specialists can also provide regular maintenance visits to keep your device in perfect condition.

Now, who needs a view with a window AC unit? Just shut the blinds and enjoy the cool breeze!

Window AC Units

Window AC units are a great choice for those who don’t have central air conditioning in their home. Here are four key points to keep in mind:

  • Measure the size of your window before buying one.
  • Install and remove easily.
  • One unit per room – multiple units for entire house.
  • Regular maintenance necessary for optimal functioning.

Alternative solutions are available, such as ductless mini-split systems or portable air conditioners.

Remember to clean and change the filter of your window AC unit regularly for peak performance. It’s like selecting a life partner – pick one that won’t leave you feeling the heat!

Choosing the Right AC Unit


To choose the right AC unit with SEER Rating and Energy Efficiency, Size of the AC Unit, Top-Rated Brands and Models, Proper Compressor and Condenser Capacity, and the Importance of Quality Thermostat for Comfort and Energy Efficiency, consider the amount of space to cool, the level of insulation, and the quality of ductwork. Then, compare top-rated brands and models, and assess the SEER rating and energy efficiency of each option to save energy costs. It’s also important to select the right size, compressor, and condenser capacity, while investing in a quality thermostat for maximum comfort and energy efficiency.

SEER Rating and Energy Efficiency

The Power of Air Conditioners and SEER Ratings

Air conditioners show their energy efficiency with the Seasonal Energy Efficiency Ratio (SEER) rating. The higher the SEER rating, the more efficient the unit is with energy usage.

SEER RatingEfficiency
1323%
2038%

Besides SEER ratings, other things can affect efficiency. Proper installation, regular maintenance, and where it’s placed are all important when selecting an air conditioner.

I chatted with Sarah who recently got a new AC with a high SEER rating. She said that even though it was more expensive than lower-rated models, she saved on her bills because of its greater energy efficiency. The right AC is important – not too big or too small!

Size of the AC Unit

For peak performance and efficiency, choosing the right AC unit size is key. It can prevent costly repairs, enhance air quality, and prolong the system’s lifespan.

A professionally created Table of sizes takes into account various factors like:

Square footage
Insulation levels
Window placement
Local climate

For example, for a home between 600-1000 sq ft, a 1.5 ton AC is ideal. In warmer climates, homes between 2500-2800 sq ft need a 4-ton unit.

It may seem like a larger system cools faster, but it’s not necessarily more efficient or comfortable. Whereas, a smaller unit may run more often to reach desired temp, but be more effective.

Pro Tip: Consulting an HVAC pro to consider multiple factors during installation can guarantee correct sizing and get the most out of your AC investment. So stay chill and pick the best AC brands and models – because sweating is so last season!

Top-Rated Brands and Models

Many big-name brands make high-quality air conditioners. These ACs are reliable and good at cooling your home or office. Here’s a selection of popular and top-rated models.

BrandModelCooling Capacity (BTU/hr)SEER rating
LennoxXC2524,000 – 60,00026
CarrierInfinity Serie12,000 – 60,00021-26
DaikinDX20VC19,200 – 60,50024.5
PioneerDiamante Serie9,000 – 36,000>22-28

When picking an AC unit, consider factors like room size, EER, SEER, noise level, and warranty. A pal of mine made the mistake of getting one that sounded funny after a few uses. He got a replacement part without any extra cost or trouble.

So, pick a brand with great customer service and good warranty. Just like socks, match the compressor and condenser for cold feet and a cool head.

Proper Compressor and Condenser Capacity

For perfect performance, the right compressor and condenser size in an air conditioning system is essential. To determine size, you must consider building’s square footage, insulation, ceiling height, and orientation.

The table below shows the recommended compressor and condenser capacity for various room sizes.

Room sizeCompressor capacity(tons)Condenser Capacity (tons)
100-300 sq.ft.11.5
301-550 sq.ft.1.52.0
551-1,000 sq.ft.2.02.5
>1000sq.ft.To be determined by HVAC professionalTo be determined by HVAC professional

Other factors to think about are installation location and maintenance needs when selecting an AC unit.

Pro Tip: It is always best to talk to a HVAC expert before buying or fitting an AC unit for best size and setup for best efficiency and device life. A cheap thermostat is like a not-so-great relationship. It’ll cost you more in the long run and leave you feeling uncomfortable.

Importance of Quality Thermostats for Comfort and Energy Efficiency

Thermostats are the key to comfort and energy efficiency. Get a high-quality one and you won’t have to compromise either. It’ll give better control of your HVAC system and save money on bills.

Invest in a top-rated smart thermostat for remote access and scheduling. Program it to fit your routine and adjust it when no one’s home – that’ll make a big difference to energy savings and comfort levels.

Brands like Nest or Ecobee have extra options like learning and compatibility with other smart devices. So, you can personalize settings to suit occupancy trends and environment.

It’s important to get rid of old thermostats with mercury-based settings. They can be dangerous if not handled properly. Replace them with modern alternatives for safety.

Installing an AC unit is expensive, but not as expensive as sweating through a heatwave!

Process of Installation and Operating Cost


To ensure you smoothly install and operate your central air conditioning system at home, you need to hire the right contractor. Necessary upgrades to your existing heating and cooling system may also be needed for optimum performance. You also need to consider the total costs involved, including installation and operating costs. Lastly, different AC units and systems have their pros and cons, so it’s important to choose the right one for your home.

Hiring the Right Contractor for Installation

Choosing the perfect pro for installation is a must. Do research and ask past customers before making the selection. Make sure the chosen one has updated tech knowledge, experience, and the right license.

Create an agreement that outlines the job details, cost, deadlines, and payment plans for a successful outcome. Ensure liability insurance coverage for possible damage or accidents during the job.

Pro Tip: Do your due diligence before hiring. Ask for references and check the quality of their prior projects – this way, you can avoid taking risks.

Upgrading heating and cooling systems is pricey – but worth it in the end.

Necessary Upgrades to Your Existing Heating and Cooling System

It’s time to make crucial changes to your heating and cooling systems! Here are some must-have upgrades:

UpgradeBenefits
Smart ThermostatEnergy savings, remote access
Air Filteration SystemBetter air quality, healthier environment
Zoning controlsTailored temperature settings in different areas of your home or property.

Plus, don’t forget to clean ducts, seal leaks around windows and doors, upgrade old insulation, and install programmable thermostats for maximum performance. Regular maintenance and quality assurance checks are also important.

The cost may be high, but with these improvements, your HVAC system will be running efficiently, and you’ll enjoy better indoor comfort. Get ready to be amazed!

Total cost, Including Installation and Operating Cost

It is essential to consider the entire cost of implementing and maintaining a system before making any investment decisions. This cost includes both the installation cost and the cost of operating the system over time.

Have a glance at the table below to understand the Total cost, Including Installation and Operating Cost.

One-time Installation CostOngoing Operating Cost
System A$5,000$500/month
System B$2,500$750/month
System C$7,500$250/month

This table informs us that each system incurs different expenses for both the one-time set up and the regular operations. It is important to choose a system that fits within your budget while meeting your requirements.

Also, remember that other factors, such as hidden expenses like training costs and maintenance fees, have an effect on the total cost of ownership (TCO).

Interestingly, Gartner’s 2018 report states, “most companies underestimate IoT connectivity costs by 50%”. Picking the ideal AC unit is like attempting to find a needle in a pool of ice.

Pros and Cons of Different AC Units and Systems

Different Air Conditioning Units and Systems – Analysis of Advantages and Disadvantages

Air conditioners are an essential part of modern homes, offices and commercial spaces. To help make an informed decision when considering installation, it is important to understand the pros and cons of different types of air conditioning systems.

The following table showcases the various AC units and their individual advantages and disadvantages in terms of energy efficiency, maintenance, cost, noise level, and design.

AC typesProsCons
WindowEasy to install. AffordableNoisy operation. Blocks window view
CentralEfficient and quiet operation. Cost-effectiveExpensive initial installation cost
PortableEasy to move from room to roomMay not cover larger rooms or spaces sufficiently
SplitQuiet operation with zone control featureInstallation calls for professional expertise

Moreover, some newer ACs can be controlled remotely or integrate well with HVAC systems that help control multiple environments at once.

A friend of mine told me about the huge drop in monthly running costs they saw after replacing their old AC unit with a more modern one due to its energy efficiency features without compromising on performance or temperature quality.

Weighing up the pros and cons and considering specific air conditioning needs is key in choosing the right unit/system combination – guaranteeing good value for money and offering an ideal heating/cooling comfort range for years to come! Having your AC in top shape is like keeping your ex’s photo on your bedside table – you never know when you’ll need it.

Maintaining and Improving Your AC System


Maintaining and improving your air conditioning system with the best practices is the key to keeping your home cool and comfortable in the hot summer months. Regular maintenance of air filters and ductwork can save you huge costs. Best practices for operating and cycling your AC system ensure efficient functioning. Improve energy efficiency and air quality by upgrading to geothermal air conditioning.

Regular Maintenance of Air Filters and Ductwork

When running an HVAC unit, regular maintenance of air filters and ductwork is necessary in order to avoid costly repairs. Mark off reminders in your calendar to prioritize maintenance. Replace air filters every three months or clean them each month. Inspect ductwork for mold and debris and seal up any leaks with foil tape or mastic sealant. Seek expert advice if you detect strange smells or noises. Schedule professional maintenance yearly to keep your AC system running optimally and reduce energy expenditure. Follow these tips for maximum performance and minimal issues.

Best Practices for Operating and Cycling Your AC System

When it comes to AC system optimization, certain practices are key to avoid breakdowns and extend its life. Here are some tips for efficient AC System Operations:

– Cycle your AC properly. Don’t shut it off completely when leaving home. Instead, set the thermostat to a bearable temp. This reduces strain on the unit.
– Change air filters regularly. This enhances airflow in your home and prevents debris from building up inside the unit.
– Limit direct sunlight coming in through windows, especially during peak sunray hours. This allows your system to work more relaxed.
– Lights produce heat too! Turn them off when not needed. This minimizes heat production in your home.
– Make sure all ductwork connections are correct and free of leaks. This avoids energy inefficiencies from air loss.

Energy Star found that one in eight households has an old or faulty HVAC system, costing homeowners thousands every year! Let’s improve energy efficiency and air quality – for our AC and lungs.

Improving Energy Efficiency and Air Quality

Enhance the energy efficiency and air quality of your AC system! Change or clean filters regularly. Keep coils clean and make sure the outdoor unit has enough clearance. Upgrade to a more efficient system or programmable thermostats. Consider adding an air purifier or a UV-light device.

Regular maintenance is essential for peak performance and long life. Professional tuning-ups include checking fan belts and electrical connections, oiling motors, etc.

Dirty filters can reduce energy consumption by 5%-15%. Upgrade to geothermal AC to have an excuse for digging a massive hole in your backyard!

Upgrading to Geothermal Air Conditioning

Ready for an energy-saving, reliable AC system upgrade? Think about harnessing geothermal technology! Here’s what you need to know.

Geothermal systems use the constant ground temperature to control air flow – up to 70% energy savings and low maintenance costs!

Pipes are installed in the ground where the temperature stays relatively steady all year. A refrigerant runs through these pipes to take heat from the ground and bring it inside, regulating airflow more effectively than traditional AC units. Plus, geothermal options can also reduce allergens and humidity levels in your home.

Pro Tip: Before upgrading your AC system, get help from a professional HVAC expert for personalized advice and proper installation.