Does insulating pipe save money?

Author: Dudley Howe  |  Last update: Monday, June 16, 2025

Pipe insulation refers to a foam tube that goes around the exposed pipes travelling from your boiler to your hot water tank. It can save you money, and help stop your pipes from freezing. And what's more, you can do it all yourself.

Is it worth insulating pipes?

If there are uninsulated water pipes in or near exterior walls, they can burst in freezing weather, which can be catastrophic. Having the insulation done during new construction of a home, during other work on your water heater or pipes, or insulating the pipes yourself, is well worth the effort.

How much energy does pipe insulation save?

Heat Loss Reduction

Studies show that proper insulation can reduce heat loss by up to 90% in some systems. For example, a typical heating system with an inch diameter heating system pipe can experience considerable heat savings when insulated. Heat conservation is crucial for maintaining energy efficiency.

How much money does adding insulation save?

On average, you can save up to 20% on your home's heating and cooling costs or up to 10% on its total energy costs by adding insulation to attics, floors, crawl spaces, and accessible basement rim joists, and by reducing unwanted air leaks all around your house.

Should plumbers insulate pipes?

Consistent Temperature Control

In winter, adding insulation to cold water pipes will prevent them from freezing and bursting. During the summer, these sections of pipe may also be exposed to outdoor heat, which may transfer to your cold water supply. Cold water pipe insulation can help you with that, as well.

Stop Insulating Pipework!

What pipes should always be insulated?

Hot Water Pipes

By wrapping these pipes in fibreglass pipe insulation, you can keep that precious heat where it belongs - inside the pipe. Hot water pipes that run through unheated spaces such as garages or crawlspaces are particularly vulnerable to heat loss and should always be insulated.

Does pipe insulation keep pipes from freezing?

Use foam rubber or fiberglass sleeves to help decrease the chances of freezing. Insulation can help keep the pipes closer to the temperature of the water inside the pipe, but it does not add extra heat to the pipe and unfortunately will not prevent freezing if the pipe is exposed to prolonged freezing temperatures.

What is the downside of insulation?

Irritation to skin and respiratory system

Wall insulation solutions like Rockwool are made of ultra-fine fibres. While thermally efficient, they can cause skin and respiratory irritation.

What is the cheapest way to add insulation?

Here are the three cheapest ways to insulate internal walls:
  1. Insulation Boards. Insulation boards are a popular choice for internal wall insulation because they are relatively affordable and easy to install. ...
  2. Battening the Walls. ...
  3. Building a Stud Wall.

Can you use too much insulation?

In fact, adding too much insulation to your walls can lead to problems such as poor ventilation, mould growth, and condensation. This is because thicker insulation can block airflow and trap moisture, leading to indoor air quality issues and even structural damage.

Does insulating pipes save money?

After insulation, the average family can turn the heater down by four degrees without noticing a difference in temperature at the tap, for a cost reduction of about 2%. When you factor in the average annual water-heating bill of $400 – $600, you're looking at savings of about $8 – $12 per year.

How much warmer does insulation make a house?

How many degrees of difference insulation makes on its own depends on the type of home you have, what the weather is like and what kind of insulation you have. Depending on what you choose, you could see a five- to 20-degree temperature difference just based on the insulation alone.

Which is better, foam or fiberglass pipe insulation?

Here you go: The best low-temperature insulation: Cellular plastic or foam rubber. The best moderate-temperature insulation: Glass fiber. The best high-temperature insulation: Preformed cement, refractory materials or ceramic fiber blankets.

Does foam pipe insulation really work?

Priced between $1.25 and $1.50 per square foot, spray foam is effective for both heat retention and condensation control, making it a versatile choice for various applications. However, caution is needed when using it on plastic pipes, as some types of spray foam can potentially cause damage.

How much does it cost to insulate pipes?

Plumbing Insulation Cost Per Linear Foot

The total cost per linear foot for pipe insulation is $1.10 to $11. This is broken down into materials at $0.20 to $3 per linear foot and labor at $0.90 to $8 per linear foot. Therefore, for a 100-foot insulation job, you could pay anywhere from $110 to $1,100.

What time of year is insulation cheapest?

Best Time of Year to Buy Insulation

In this case, the spring is the best time, because you will also start to see savings in the summer months. The same is true for warmer climates, just different times of year because you'll want the job finished before the heat sets in.

What is the most economical insulation?

Overall, fibreglass insulation is the cheapest and most effective insulation option available, making it a popular choice for homeowners and builders alike.

How much does it cost to insulate 1000 sq ft?

The average price of fiberglass batt insulation is $0.30-$1.30 per square foot, and labor costs are roughly $0.75-$1.75 per square foot. Expect to pay between $1,050 and $3,050 to install 1,000 square feet of fiberglass insulation in your home.

Where not to insulate?

Never place insulation close to water heaters, oil burners or anything hot. The backing is especially flammable and will be a major fire hazard for your home.

Is a house with poor insulation a waste of energy?

Without insulation acting as a thermal barrier, heating and cooling systems must operate longer to maintain comfortable indoor temperatures, leading to higher energy consumption and costs.

Is spray cork any good?

Unlike many other insulation materials, sprayed cork is made entirely from natural, sustainable resources. The production process doesn't involve harmful chemicals, making it a safe choice for those looking for a high-quality product that doesn't compromise on ethics.

How many faucets to let drip?

The question of dripping every faucet needs context. You can drip just one if it's further from the water line. If you are unsure where that is, dripping all of them is a good option. It might cost you extra on your water bill, but plumbing repair and damage of a busted pipe in your home could cost even more.

How to winterize pipes so they don't freeze?

Four steps to winterize exterior plumbing:
  1. Shut off valves to the external water supply. ...
  2. Disconnect garden hoses and fittings from the hose bibbs. ...
  3. Clean out your gutters and downspouts. ...
  4. Seal any visible cracks or gaps.

Can pipes freeze in one night?

Yes, pipes can freeze overnight if temperatures plummet drastically. Uninsulated pipes in unheated areas like attics or exterior walls are most vulnerable.

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