Accurate System Replacement Estimates Require Careful, In-Person Examination

The Importance of an In-Home HVAC Estimate

On-site HVAC estimates may seem inconvenient, but they’re absolutely essential to doing the job correctly. Here’s why HVAC estimates require an inspection first.


Why HVAC Estimates Require an Inspection

You know your current HVAC system is having issues. Perhaps the 96-degree temperatures in North Dallas’s summers feel more brutal each year. Maybe your furnace consistently breaks down during the cooler months. It’s time for an upgrade, and that means calling a company like Colony Air Conditioning & Heating for a new heating and cooling system estimate.

The only problem is that this requires someone to come over and inspect your current system. You might wonder why that can’t be done over the phone. While that would certainly make things easier upfront, there are a lot of things we need to inspect before recommending a new system. An in-home HVAC estimate is crucial to making sure you get the best system possible.

A Colony technician performing a diagnostic test on a furnace in Frisco

What a Phone Conversation Can Tell Us

When you call, there are a few things we’ll discuss over the phone. Specifically, we’ll ask you a few questions to understand exactly what’s going on with your existing system. For a new HVAC installation estimate, we’ll request these details:

  • The age, brand, and model of your unit
  • The nature of the problems you’re experiencing
  • How long these problems have been going on
  • Whether you have areas in your home that are not sufficiently cool or warm
  • Where the system is located in your home (attic, utility closet, basement, outside)
  • Whether the system has shut down or is still running
  • The number of units in use

This is all fairly bare-bones, but it can give us an idea of what we’re working with before we visit your Frisco home. For example, a call for an air conditioner installation estimate should give us a rough idea of what issues you’re facing and what might be needed to address them. That said, it won’t tell us exactly what new equipment you’ll need or how much it will cost to install.

What Talking Over the Phone Can’t Show

While the initial phone conversation can give us a starting point, we won’t know exactly what you need until we examine your existing HVAC equipment. We won’t know your equipment size, exact performance issues, duct layout, or space limitations until we take a look in person.

These items are all crucial to correctly installing the right equipment. It’s actually a pretty serious issue, both in North Dallas and nationwide. More than 65% of residential HVAC systems in the U.S. are incorrectly installed, resulting in up to 30% higher energy usage on average. We’d like to avoid that problem, which is why our HVAC estimates require an inspection.

What We Evaluate During an On-Site Visit

When we arrive for the on-site HVAC estimate, we’ll check a number of things. Those include your heating and cooling equipment, the ductwork, your home’s square footage, wiring, drainage systems, and ventilation. We’ll also perform a Manual J load calculation to help with system sizing. Here’s what to expect during an HVAC estimate in more detail:

Equipment Inspection

Evaluating your existing air conditioner, furnace, or heat pump can help us determine what’s going wrong with it. For instance, if your air conditioner shows signs of significant wear, we can compare that against its age to see if something is causing it to fail prematurely. We’ll also check its efficiency rating to evaluate its performance.

Ductwork and Ventilation Inspection

Heating and cooling problems frequently stem from poor ductwork. Often, ducts have leaks or are improperly sized. The idea is to make sure your ventilation system can accommodate a new unit. It’s important to determine whether your ducts need work since that can significantly impact the cost of your new system.

Manual J Load Calculation

One of the main reasons why HVAC quotes cannot be given over the phone is the need for a Manual J load calculation. This is a calculation that considers many factors, including your home’s square footage, individual room dimensions, insulation, window types, and air leakage rates. We even take Frisco’s local climate into account.

The Manual J calculation identifies how much heating and cooling your home needs. Those results can then be used with Manual S and manufacturer performance data to select appropriately sized equipment. If the duct system needs changes, Manual D provides the framework for duct design. It is vital to get this calculation right since your system’s efficiency depends on it.

Common Issues Found During On-Site Estimates

During the numerous in-home heating and cooling inspections we’ve performed in our 49 years of experience, we’ve found a number of common issues. These are why on-site HVAC estimates matter. Without an in-person inspection, these problems would probably go unaddressed, resulting in premature equipment failures down the line.

We often see:

  • Poor Sizing: Many Texas homes have an oversized air conditioner. Often, we find improperly sized furnaces and heat pumps as well. The risks of an oversized HVAC system include significant wear and tear, increased energy costs, and moisture control issues. With Frisco’s humidity, this can quickly lead to mold growth. This is part of why HVAC sizing matters so much.
  • HVAC Installation Issues: Over half of all heating and cooling systems in the nation are thought to perform poorly due to substandard installation. Installation defects can lead to almost half the heated or cooled air never reaching your living spaces, making it vital to install the equipment correctly. Unfortunately, we often find installation defects during our inspections in Frisco.
  • Duct Issues: Among the various defects we find are duct layout problems. Your ducts may be undersized for the kind of unit your home needs, or they may be designed in a way that obstructs airflow. Duct leaks are another common issue. The material may separate at the seams, letting air out and moisture in.

While these issues can get expensive, installation is the best time to address them. Once they’re fixed, you’ll have a much more efficient system that will handle Frisco’s weather for a decade or more.

Why Rushing an Estimate Costs You More in the Long Run

After determining what’s going on with your system and what size unit your home needs to stay comfortable, we’re better able to pin down the exact cost of installation. Everything from your home’s square footage to your existing unit’s SEER rating matters. Here are just a few HVAC installation pricing factors:

  • Equipment size requirements
  • Amount and quality of insulation in the home
  • Types of windows
  • House’s layout
  • Whether ductwork needs modification
  • Equipment efficiency levels
  • Type of HVAC system (central AC, furnace, heat pump)
  • Current access to existing equipment

With so many factors that affect HVAC installation costs, it’s important not to rush the process. You want your HVAC system installation quote to be accurate. If any part of the process is completed sloppily, it can result in unforeseen costs later. A poorly installed system costs more to run, and it will likely break down sooner as well. Those repairs can get expensive too. A replacement evaporator coil, for instance, can cost up to $5,500 in North Dallas.

A Frisco homeowner signs paperwork while a technician gestures at the freshly installed ductless AC behind them

Choose Thorough HVAC Estimates

When we inspect your North Dallas home, the ultimate goal is to install a system that will keep you comfortable. Whether you’re looking to replace an old air conditioner or need a furnace installation estimate, you need someone who will be thorough. The process shouldn’t be rushed. Every stage should be done with precision and care. That way, you can avoid common installation issues later on.

Colony Air Conditioning & Heating has been inspecting and installing heating and cooling systems in Frisco for 49 years. As a company with an A+ rating from the Better Business Bureau, you can expect us to handle the job professionally. Our NATE-certified technicians are familiar with every stage of the process, from system diagnostics to Manual J load calculations. We’ll also treat your home with respect. When you need to schedule an in-home HVAC estimate, call Colony at 972.591.0293.

Frequently Asked Questions

What questions should I ask during an HVAC estimate?

You should focus on getting information about your system and evaluating the HVAC company’s reliability. Some questions to ask during an HVAC estimate include:

  • Do you perform a Manual J load calculation?
  • Could you walk me through your inspection process?
  • What condition is my equipment currently in?
  • What equipment would you recommend and why?
  • Is the current ductwork still usable?
  • Are you licensed to perform HVAC work in Frisco?
  • Are you insured?
  • Will you be handling all the required permits?
  • How much will everything cost? Can I get an itemized list?
  • How long will the job take to complete?
  • What warranties do you offer on labor and parts?
  • Will your personnel be performing the installation, or will you send a subcontractor?

Can I ask for several equipment options?

Yes. We want your new system to meet your needs, and you’re more familiar with your home’s current comfort levels than we are. Often, there are many ways to get the result you want. For instance, if you have us over for a heat pump installation estimate, we’ll probably discuss the different types of systems available (air-source, ground-source, hybrid) and how each can benefit you.

What should be included in a written estimate?

A written HVAC installation estimate should include:

  • Contractor information
  • Your information, including your house address
  • Equipment specifications, including model name and number, SEER rating, controls, and capacity
  • The scope of the work to be completed along with timelines
  • An itemized breakdown of all costs, including parts, equipment, labor, fees, and permits
  • Warranty terms and conditions
  • Payment terms and timelines

How much does an estimate cost with Colony?

At Colony, we provide free estimates for new equipment. That said, the cost of the equipment installation will depend on numerous factors, including the recommended equipment, your ductwork, and the accessibility of your existing heating or cooling systems.

What is an HVAC load calculation?

An HVAC load calculation is a detailed assessment of your home’s current heating and cooling requirements. We use this calculation to determine the tonnage (the unit’s capacity) your new system needs to have.

How long does an on-site HVAC estimate take?

Most HVAC estimates take one to two hours to complete from start to finish. The exact time depends on various factors, including the size of your home and the accessibility of the equipment.

Do I need to be home for the appointment?

Yes. You will want to be home when we come to perform your HVAC estimate. We’ll need to access your equipment and take measurements throughout your home. We’ll also have details to discuss with you after the inspection, such as pricing, your current comfort needs, and details about your system.

What could cause the installation price to change?

Ideally, the price will remain consistent with the estimate. We make sure you’re not hit with any surprise fees by completing a thorough in-home inspection. The current state of your ducts, electrical components, and permit requirements are all determined upfront.

This is a serious risk when it comes to lowballed HVAC estimates. Some companies in North Dallas will give you the lowest estimate possible, then “discover” something during the installation that increases the price. Always make sure you hire someone who does comprehensive inspections upfront.