First Responder, Military, and Senior Discounts.
First Responder, Military, and Senior Discounts.
An installation is not:
Old one out. New one in. Cold air. Collect check.
We are installing something that may sit in a customer’s home for the next 10, 15, or even 20 years.
The quality of what we do today can determine how that system performs for the rest of its life.
A beautiful piece of equipment installed poorly is still a poor system.
A great condenser connected to bad ductwork is still going to have airflow problems.
A perfectly charged system with a bad drain installation can still destroy a ceiling.
A $15,000 inverter system installed with the wrong settings is still wrong.
And a system that turns on when we’re finished is not necessarily a system that was installed correctly.
That’s why Klein Cooling has an installation procedure.
We actually wrote it down.
Yes, you may read it.
In fact, please do.
Our installation SOP exists to provide a standardized process for safely and professionally replacing residential air-conditioning systems while protecting the customer’s home, meeting our installation standards, and verifying that the finished system actually operates correctly.
This section explains what that looks like in the field.
A good installation can go sideways before anybody removes a single screw.
Wrong air handler.
Wrong condenser.
Wrong voltage.
Missing heater kit.
Missing thermostat.
No nitrogen.
No recovery cylinder.
No fittings.
No mastic.
No idea what was actually sold.
And now six people are standing in a driveway at 8:15 in the morning staring into the back of a truck.
Check the job before you leave.
Our SOP requires the installation team to verify the condenser and air handler against the proposal—including model, size, and voltage—and confirm that the required tools, materials, permits, and installation guides are available. The proposal itself should be reviewed so the crew understands the scope before work begins.
Know what you’re doing today.
Know what equipment you’re installing.
Know what was promised.
Know whether there are special circumstances.
And if the proposal doesn’t make sense:
Ask before you start tearing things apart.
Ten minutes now can save two hours later.
You may be at an installation.
The customer is at their home.
Those are two very different perspectives.
We arrive on time.
We introduce ourselves.
We park thoughtfully.
We don’t block the neighbor’s driveway.
We don’t drive across the customer’s grass.
No smoking.
No cursing.
Treat the property with respect.
Then protect the house before the work begins.
Shoe covers are required when entering the home regardless of flooring type.
Use drop cloths around indoor and garage work areas.
Do not put tools, equipment, or materials on furniture or unprotected flooring.
Our SOP also requires appropriate PPE and specifically calls for flame-resistant clothing when brazing. Outdoor work should be staged with hydration and tents or umbrellas as needed.
This isn’t fluff.
A technically perfect installation doesn’t feel very perfect to the homeowner when we scratch their floor doing it.
Things happen.
We’re carrying large pieces of metal through people’s homes.
We’re working in attics.
We’re moving equipment through doorways.
Sometimes something gets damaged.
The rule is simple:
Don’t hide it.
Our SOP requires any damage to be reported to the office immediately and then communicated courteously to the customer.
Do not hope they don’t notice.
Do not attempt a secret repair.
Do not place a potted plant in front of it.
Tell us.
We deal with it.
Integrity gets considerably easier when you practice it immediately.
Before dismantling the existing system, get organized.
Tools where you’ll need them.
Materials where you’ll need them.
Recovery equipment ready.
Nitrogen ready.
Vacuum equipment ready.
Electrical supplies ready.
Duct materials ready.
Drain materials ready.
The goal is not to create the world’s largest HVAC yard sale across the customer’s property.
Stage deliberately.
Our SOP specifically calls for staging tools and materials near the work areas to minimize unnecessary trips back and forth to the truck.
Efficiency doesn’t mean rushing.
It means not walking to the truck 47 times because nobody thought ahead.
Kill the power.
Lock out and tag the breakers serving the existing equipment.
Then verify zero voltage with a meter.
Not:
“Breaker is off.”
Verify it.
Then recover the refrigerant properly into an approved recovery cylinder.
We do not vent refrigerant.
Record the refrigerant type and amount as required for our disposal records.
While you’re there, look at the electrical system we’re about to connect the new equipment to.
Our SOP requires us to compare the existing breaker, disconnect, and whip with the new equipment’s maximum overcurrent protection requirements and replace components that are undersized or damaged.
We’re replacing an HVAC system.
We’re not blindly attaching new equipment to whatever happened to be there before.
Once recovery is underway and we’ve confirmed the equipment is de-energized, disconnect the electrical, low-voltage, refrigerant, and duct connections.
After recovery, close the condenser king valves to help prevent oil leaks.
Move the old equipment somewhere safe.
Not somewhere it can leak oil onto the customer’s driveway.
Not leaned against their garage door.
Not sitting on landscaping.
Not balanced precariously somewhere because:
“We’ll move it later.”
Our SOP specifically requires old equipment to be placed where it will not scratch or contaminate the customer’s property.
The customer’s property remains the customer’s property even while we’re replacing their air conditioner.
This is important.
Removing the old equipment exposes things we couldn’t necessarily see during the estimate.
Look.
Inspect the supply and return plenums.
Our SOP requires damaged or incompatible plenums to be repaired or replaced, with the office notified if additional work is necessary.
Do not put a brand-new system on top of garbage and call it an installation.
This connects directly to the standard from the previous section:
“It’s just the return” is not an acceptable sentence.
Neither is:
“It’s only an attic.”
And while we’re here:
“Can’t see it from my house” needs to be eliminated from your vocabulary.
If it’s part of our installation, it gets done correctly.
Whether the customer can see it or not.
If we’re installing a new lineset as part of the job, follow the scope.
If we’re reusing the existing lineset, our SOP requires it to be flushed with R-11 and nitrogen.
If the old system had no refrigerant, pressure test the existing lineset with nitrogen before trusting it with the new equipment.
Our SOP gives 400 psig as the example pressure-test value.
If the lineset leaks and the leak cannot be located or repaired, notify the office. It may need to be replaced.
And while the system is open:
Cover the lineset openings.
Don’t leave open copper sitting there collecting insulation, drywall dust, attic debris, insects, dirt, or whatever else the universe would like to put into the brand-new refrigeration circuit.
Clean system.
Clean installation.
Our SOP has a simple procedure for the existing condensate line.
Add Drain Solve and water.
Temporarily cap the outside drain.
Leave it while the installation continues.
We’re using the installation time to help clean the existing drain before connecting the new equipment to it.
Again:
Think ahead.
There is no reason to wait until startup to discover the drain doesn’t drain.
Start with the foundation.
The condenser pad needs to be level.
Use shims or gravel where necessary.
Then secure the condenser properly.
Our SOP calls for two top screws and one bottom screw per bracket.
Not one screw because:
“That thing ain’t going anywhere.”
Florida occasionally disagrees.
Install it correctly.
Our SOP also tells us to connect the lineset at the outdoor unit first so evacuation can be prioritized.
The sequence of the job matters.
We’re trying to work efficiently without sacrificing quality.
Before brazing:
Have a fire extinguisher nearby.
Remove Schrader cores.
Remove bulbs, sensors, rubber gaskets, or other components identified in our procedure that could be damaged by heat.
Protect the king valves with wet rags.
Use a heat shield around walls, insulation, or other vulnerable surfaces.
Install the Armor Flex before making the final joint where appropriate.
Tape openings so debris stays out.
Do the preparation before you have a torch in your hand.
Once you’re brazing:
Flow nitrogen.
Our SOP requires nitrogen to be purged through the lines while brazing to prevent internal oxidation.
Not when it’s convenient.
Not only on inverter equipment.
Not only when somebody is watching.
Every installation.
After brazing, we don’t stare at the joints and decide they look good.
We test them.
Our SOP calls for pressure testing the system with nitrogen—again using approximately 400 psig as the example—and checking joints with soap solution.
A beautiful braze joint can leak.
An ugly braze joint can hold.
Your eyeballs are not a pressure test.
Test your work.
Every job.
That’s the standard.
Our SOP says:
Change vacuum pump oil every job.
Fresh oil helps the pump do the job we’re asking it to do.
We’re not trying to see how many installations we can get out of one batch of vacuum pump oil.
Oil is cheaper than callbacks.
Evacuate the system to 500 microns.
Then verify that it holds for 10 minutes.
Not:
“Vacuum’s been running for an hour.”
Time is not a micron reading.
Not:
“Gauge on the pump is all the way down.”
Not:
“She’s good.”
500 microns. Ten-minute hold.
We measure because measuring removes guessing.
Our SOP specifically says that while the system is under vacuum, electrical connections can be completed.
That’s how we stay efficient.
The vacuum pump does not require emotional support.
Move on.
Finish electrical.
Work on the air handler.
Finish the drain.
Seal penetrations.
Clean.
Prepare commissioning.
There is always something productive to do.
Linesets and wiring have to enter the building somewhere.
When we’re finished, seal those penetrations.
Our SOP requires wall penetrations and lineset-cover openings to be sealed with caulk or foam.
We do not leave a highway into the house for:
Water.
Hot attic air.
Humidity.
Bugs.
Lizards.
Or anything else Florida has created.
If we opened it, we close it.
The air handler is not simply something we shove into the available hole until the door closes.
Level the base.
Check access.
Our SOP specifically requires us to make sure the filter door remains accessible and that the drain or lineset does not block it. We also verify that the closet door can close and make adjustments where necessary.
Think about the person who has to service this system later.
Which, very possibly, is you.
Do not create a future service nightmare because moving something two inches today seemed inconvenient.
A brand-new air handler connected to poorly sealed ductwork is not a finished installation.
Our SOP requires duct connections to be sealed with UL-listed foil tape or mastic.
For horizontal installations, plenums are secured to the metal flange with screws and washers.
The inside duct-to-air-handler connection is also sealed with mastic, with the heat strips protected during the process and the protection removed afterward.
Seal it.
Secure it.
Make it look like somebody cared.
Because somebody should.
At the air handler, verify that the high-voltage wiring is appropriate for the installed heater kit.
Our SOP also requires a disconnect for air handlers located in closets or attics.
For low-voltage wiring, refer to the AHU and thermostat guides.
And yes:
You may read those too.
Nobody gets extra points for wiring unfamiliar equipment from memory.
Get it right.
Because hopefully it will.
Our SOP requires visible drains to be insulated.
Install the required float switches.
Pitch the drain correctly.
Avoid double traps.
Seal AHU jacket penetrations to help prevent moisture problems.
Condensate problems can cause thousands of dollars in damage.
This is not the place for:
“Looks like enough pitch.”
Build it properly.
Then later—
test it.
This is where we finally get to the other manual.
Our SOP requires us to set the AHU dip switches and control-board settings per the manufacturer’s manual and note the heater-kit size on the door panel.
So yes:
You may read the installation manual.
There is no Klein Cooling award for correctly guessing dip-switch positions.
Factory settings are not automatically the correct settings for every installation.
Configure the equipment we actually installed.
If we’re installing a new thermostat:
Wash your hands first.
That is actually in our SOP.
Because handing a customer a brand-new white thermostat with your fingerprints embedded into it is an interesting way to finish a professional installation.
If we’re reusing the existing thermostat, verify the wiring.
Configure the thermostat for the actual equipment—single-stage, two-stage, or whatever the installation requires.
Then compare the thermostat temperature against a reference thermometer and calibrate it within ±1°F as called for in our SOP.
Don’t assume.
Verify.
Now we commission the system.
Only after evacuation is complete do we release the refrigerant charge and begin system testing.
Our SOP calls for checking pressures and charge according to the condenser guide, with target values in the SOP of 10–15°F subcooling and 8–12°F superheat, adjusted as necessary.
Add or recover refrigerant if required.
Install the locking caps on the outdoor unit.
We are not charging by:
Pressure looks good.
Suction line feels cold.
It’s blowing cold.
Beer can cold.
Or:
“I’ve been doing this for 20 years.”
Measure it.
Remember the outside drain cap?
Take it off.
Prime the trap with water.
Then verify flow.
This is an incredibly useful time to discover that water isn’t going where you expected it to go.
Not tomorrow.
Not when the float switch trips.
Not when the customer calls because water is coming through the ceiling.
Today. While we’re still standing there.
Our SOP requires float switches to be tested during commissioning.
Not installed.
Tested.
There is a difference.
A safety device that exists but doesn’t shut the system down is decorative.
We don’t install decorative float switches.
Yes.
In Florida.
In August.
Our SOP requires heat mode to be tested.
Because the best time to discover that heat was wired incorrectly is while we’re installing the system.
Not when the first cold morning arrives and the customer discovers it for us.
Measure supply and return temperatures.
Our SOP calls for a target split of 15–20°F.
Again:
Measure.
Don’t put your hand over the register and announce:
“She’s cold.”
Your hand is not NIST certified.
This matters enough to say twice.
A compressor running does not mean the installation is complete.
A blower running does not mean the installation is complete.
Cold air does not mean the installation is complete.
We don’t install equipment until it runs.
We install systems until we’ve verified they operate correctly.
That means refrigeration.
Airflow.
Drainage.
Safeties.
Heat.
Controls.
Temperature.
Everything we touched.
Now look around.
Tools.
Wire scraps.
Copper.
Zip ties.
Old insulation.
Screws.
Rags.
Cardboard.
Drain fittings.
Tape backing.
The little piece of wire you absolutely know you’re going to step on if you don’t pick it up.
Clean it.
Our SOP requires the installation crew to remove debris, tools, and equipment from the work areas.
The customer should be left with:
A new HVAC system.
Not evidence of an HVAC system installation.
Our SOP calls for the appropriate company stickers to be installed on the equipment and the permit to be taped to the front of the air handler.
Complete the refrigerant log and job paperwork.
The details matter.
A beautiful installation that nobody documented properly creates unnecessary problems later.
Finish the entire job.
Not just the mechanical part.
Do not finish a full-system replacement and disappear.
Walk the customer through the installation.
Show them how the system operates.
Show them the thermostat.
Help connect the thermostat to Wi-Fi.
Help them download the app.
Provide the permit copy, warranty information, and maintenance guidance called for in our SOP.
Answer their questions.
They just spent a lot of money with us.
Take ten minutes and make sure they understand what they bought.
This is their system now.
Hand it over like you’re proud of it.
Our SOP requires old equipment and recovered refrigerant to be transported for proper recycling or reclamation.
Do not leave pieces of the customer’s old HVAC system scattered around their property.
Unless the scope specifically says otherwise:
We brought the new one.
We take the old one.
Before leaving, take the job photos.
Our SOP requires them to be sent to the office along with completion status and any follow-up needs.
Take pictures that actually show the installation.
Condenser.
Air handler.
Electrical.
Drain.
Duct connections.
Thermostat.
Anything unusual.
Anything we may need to reference later.
Do not send the office one blurry picture of the condenser from 40 feet away and consider the installation documented.
Take pictures of your work like you’re proud to put your name on it.
Because you should be.
Stop.
Walk the job one more time.
Look at the outdoor unit.
Look at the air handler.
Look at the drain.
Look at the electrical.
Look at the duct connections.
Look at the thermostat.
Look around the customer’s home.
Look around the yard.
Make sure all tools are accounted for.
Make sure all trash is gone.
Make sure the old equipment is loaded.
Make sure the system is operating.
Make sure the customer knows how to use it.
Make sure the paperwork and photos are complete.
Make sure there isn’t something you’re hoping nobody notices.
Then ask yourself one question:
Would I be happy if this installation were in my house?
If the answer is no—
You’re not done.
Sometimes installations don’t go perfectly.
We discover bad ductwork.
A lineset fails a pressure test.
An electrical problem appears.
A piece of equipment arrives damaged.
Something doesn’t operate correctly during commissioning.
Our SOP requires issues and follow-up needs to be reported to the office.
Do not hide problems to get home faster.
Do not leave something questionable because:
“We’ll see what happens.”
We already know what happens.
A callback happens.
If you need help, ask.
The SOP specifically tells technicians not to hesitate to ask the office or a senior technician for assistance or clarification.
Not knowing something isn’t the problem.
Knowing something is wrong and leaving it anyway is.
Customers may never see most of what you did.
They probably won’t know whether you flowed nitrogen.
They won’t see the inside of the duct connection.
They may never know what micron level you reached.
They won’t know whether the lineset was protected while it was open.
They probably won’t know whether you checked the dip switches.
They may never watch you test the float switch.
We do it anyway.
Because workmanship isn’t performing for the customer.
It’s doing the job correctly when nobody would know the difference.
The customer may only see a condenser outside, an air handler inside, and cold air coming from the vents.
We see everything behind it.
And we know whether it was done right.
We are trying to install well.
That doesn’t mean we’re inefficient.
Stage the job.
Work together.
Use downtime intelligently.
While the vacuum pump is running, do something else.
While the drain cleaner is sitting, do something else.
Know what the next step is.
Don’t wander around looking for tools.
Don’t make six unnecessary trips to the truck.
Don’t wait until 3:00 PM to discover you’re missing something you needed at 9:00 AM.
Efficiency matters.
But speed is never the standard.
Quality is.
Every installation is different.
Closets are different.
Attics are different.
Duct systems are different.
Electrical systems are different.
Equipment is different.
Homes are different.
But the standard does not change.
Protect the customer’s property.
Verify the equipment.
Understand the scope.
Work safely.
Recover properly.
Inspect what we’re connecting to.
Prepare the lineset correctly.
Keep contaminants out.
Flow nitrogen while brazing.
Pressure test your work.
Change the vacuum pump oil.
Pull to 500 microns.
Verify the hold.
Level and secure the equipment.
Seal the ductwork.
Build the drain correctly.
Install and test the safeties.
Configure the controls.
Commission the system.
Test cooling.
Test heat.
Verify drainage.
Clean everything.
Document everything.
Walk the customer through their new system.
Then look at the entire job one final time before you leave.
Our SOP was written so there shouldn’t be any mystery about what a Klein Cooling installation is supposed to look like.
Yes, you may read it.
Actually—
please do.
Because when we put Klein Cooling on an installation, we’re putting our name on everything behind that sticker too.
The brazes nobody sees.
The screws nobody sees.
The mastic nobody sees.
The drain pitch nobody notices.
The vacuum reading the homeowner will never know existed.
The float switch they hopefully never need.
The wire connection hidden behind the panel.
All of it.
That’s the installation.
And that’s our name on it.