How to Make an Infrared Sauna Hotter (7 Practical Tips That Actually Work)

If your infrared sauna isn’t getting as hot as you expected, you’re not alone. A lot of people run into this, especially with home sauna setups.

The good news is, most of the time it’s fixable. You don’t need to replace your unit or spend a ton of money.

In this guide, you’ll learn why your sauna might not feel hot enough, how to fix it step by step, and what to avoid so you don’t damage your sauna or risk overheating.

Why Your Infrared Sauna Doesn’t Feel Hot Enough

Quick takeaway, it’s not always about temperature numbers.

Many first-time sauna users notice infrared heat feels different compared to a traditional sauna. It doesn’t blast hot air, it warms your body directly.

Here’s what’s usually going on:

• Lower air temperature by design
  Infrared saunas typically run between 120°F and 150°F, which is lower than traditional saunas.
• Heat builds gradually
  The first few minutes can feel mild, then sweating ramps up later.
• Poor setup or insulation
  In most home sauna setups, heat loss is a big issue if insulation or sealing isn’t right.
• Underpowered heater
  If the sauna heater isn’t strong enough for the space, it struggles to maintain heat.

If you want a deeper breakdown of how these systems work, check out this helpful guide on infrared sauna basics and performance.

How to Make Your Infrared Sauna Hotter (Step-by-Step)

Quick takeaway, small tweaks can make a big difference.

1. Preheat Longer Than You Think

A common mistake beginners make is jumping in too early.

Let your sauna heat up for at least:

• 20 to 30 minutes minimum
• 40 minutes for colder environments

What usually happens is the air warms first, but the panels need more time to fully heat up.

2. Check Door Seals and Air Leaks

If heat escapes, your sauna will never feel hot enough.

Look for:

• Loose door seals
• Gaps in panels
• Poorly fitted glass doors

If the sauna cools down quickly, air leaks are often the reason.

3. Adjust Your Sauna Temperature Properly

Set your sauna to the higher end of its range.

Typical settings:

• Beginners: 120°F to 130°F
• Regular users: 130°F to 150°F

If you’re unsure what’s ideal, this guide on sauna temperature recommendations breaks it down really well.

4. Sit Closer to the Infrared Panels

This one’s simple but overlooked.

Infrared heat works best when:

• Your body is directly facing the panels
• You’re sitting upright, not slouched

In real sauna sessions, positioning makes a noticeable difference in how intense the heat feels.

5. Improve Insulation Around Your Sauna

If your sauna is in a garage, basement, or outdoor space, heat loss can kill performance.

Try this:

• Add insulation behind walls
• Avoid placing it near cold surfaces
• Keep it away from drafts or open windows

Many home sauna owners run into this problem after installation.

6. Limit Opening the Door

Every time you open the door, heat escapes fast.

One thing people often overlook is how quickly temperature drops even with a quick open and close.

Try to:

• Enter once fully preheated
• Avoid stepping out repeatedly

7. Upgrade or Add Infrared Emitters

If your sauna still struggles, the issue may be hardware.

You might need:

• More emitters
• Higher wattage panels
• Replacement heating elements

If your sauna isn’t heating properly, the issue is often heater size or power output.

For sizing help, check this sauna heater sizing calculator.

Additional Tips to Boost Heat and Comfort

Quick takeaway, it’s not just about temperature, it’s about how you use it.

Here are some practical tips:

• Stay hydrated
  Most first-time users underestimate how important hydration is.
• Use a towel on the bench
  Helps retain body heat and improves comfort.
• Keep sessions controlled
  Longer sessions are usually built gradually, not all at once.
• Wear light clothing or none at all
  Heavy fabrics block infrared penetration.

If you’re unsure what’s best to wear, this guide on what to wear in a sauna clears it up.

Common Mistakes That Keep Your Sauna From Getting Hot

Quick takeaway, avoid these and you’ll fix half your problem.

• Entering before full preheat
• Expecting instant heat like a traditional sauna
• Ignoring insulation issues
• Using the wrong temperature settings
• Opening the door too often

Beginners sometimes assume hotter always means better, but proper setup matters more than max temperature.

Safety Tips When Increasing Sauna Heat

Quick takeaway, don’t push it too far.

Even if you want more heat, safety comes first.

• Limit sessions to 15 to 30 minutes
• Take breaks if you feel dizzy
• Drink water before and after
• Avoid alcohol before sauna use
• Stop immediately if you feel unwell

If you want a full breakdown, this sauna safety guide is worth reading.

FAQs:

Can I make my infrared sauna as hot as a traditional sauna?

No, infrared saunas operate at lower temperatures by design, but they still provide deep heat through direct body absorption.

Do I need to upgrade my heater to get more heat?

Only if your sauna consistently fails to reach its max temperature, otherwise setup issues are usually the cause.

Is it okay if my sauna takes 30 minutes to heat up?

Yes, that’s completely normal, especially in cooler environments or larger sauna cabins.

Can I use a space heater inside my sauna?

No, that’s unsafe and can damage your sauna or create a fire risk.

What’s the best way to feel hotter in a sauna?

Sit closer to the panels, preheat longer, and make sure your sauna is well insulated.